4.1 out of 5 Customer Rating
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1251 Questions Answered

K9 Advantix II

4.1 out of 5 Customer Rating
Star symbol Star symbol Star symbol Star symbol Star symbol (912)
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1251 Questions Answered
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K9 Advantix II
6pk Red Dog 21-55 lbs
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912 reviews
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Author avatar
Vicky
Posted 3 weeks ago
Posted 3 weeks ago
Breed (1)Chihuahua & a (1) Chihuahua/Cocker Spaniel mix
Rating
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Overall effectiveness
5.0
Highly Recommended!!
After coming across this one and done product many years ago(after trying flea collars, tick stuff & mosquito repellent) I will never use anything else. Its quick and easy to apply & doesn't have any side effects. It has a repellent for fleas and ticks so the bugs don't go on them. If by chance they do jump on they will be killed on first bite. GREAT STUFF!!
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Marilyn
Posted 1 month ago
Posted 1 month ago
Breed Shitzu
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
K9 Advantix II
I purchased this product for my dogs and it did not work. I called customer service and they told me that it had to be used for 3 months before the product would get rid of the fleas. My dogs are inside dogs and only go out to play and potty so they are not living outdoors with the flea population. If you have to use it for 3 months before it works what is the point except for them to be able to sell more product.
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Cruz
Posted 1 month ago
Posted 1 month ago
Breed Lab
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
Same name, different results
Few years ago I used this product and it worked great, however whatever they did with the formula is not the same today, the effectiveness is no longer there. I used a product called ACTIVYL which was highly effective. Well today that product is no longer for sale here and I wonder why. Was it so effective it was taking sales away from other brands? Whatever the case. Advantix no longer does the job it once claimed to do.
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Author avatar
Tilly
Posted 3 months ago
Posted 3 months ago
Breed Golden
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
5.0
Excellent Control of fleas and Ticks
This product works excellent for control of fleas and Ticks. I highly recommend this product. My dogs never get fleas or Ticks when on this medication.
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Chris8550
Posted 6 months ago
Posted 6 months ago
Breed Boston terrier
Rating
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Overall effectiveness
2.0
Used to work but isn’t doesn’t work
Used to work but now isn’t working... I don’t know if the fleas got used to it or if the bad batch or something else
Thumbs up Would not recommend this product
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Fldog
Posted 6 months ago
Posted 6 months ago
Breed Shepherd
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
Completely ineffective
I purchased this last month and have treated my dog twice as indicated on the box. It states treatment can be repeated 7 days after the first application. My dog has been scratching a lot the last few days. I just gave him a bath and there were a ton of fleas. I might as well buy have bothered with this treatment. What a waste of money and my dog has been suffering with the little bloodsucking pests. I will never purchase this brand again.
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Intelhottie
Posted 7 months ago
Posted 7 months ago
Breed 2 mutts, 4 cats
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
$600+ wasted over 4 months and absolutely NO impro
I was on frontline for years but when I thought I saw a couple fleas on my dogs in September 2020, I decided to make a switch to Advantage II for my cats and Advantix II for my dogs--- BIGGEST mistake of my life (seriously, like over any horrible exes). I have $515.97 in receipts I submitted to the company (which was as horrible as the experience, which I will get to) and spent an additional $70 in store (in which I cannot find the receipt) since September 2020 to December. I followed every tip on the website and insert and my animals were still covered. I applied perfectly. I applied initially weekly, vacuum daily, steam cleaned, wash bedding constantly, etc. I don’t even have carpet but on the stairs and have treated the stairs and couches with Predcor. I even bought those flea traps with the sticky bottoms. I am not including any of this in that total I spent-- that was all on the flea medications themselves for the 6 animals. I have saved some, not all, of the vials so on 11/13 I called Elanco. They denied my request for any type of refund. They questioned my exact dosage dates and frequency more than a doctor wants to know about your menstrual cycles but I took my best guesses, for all 6 animals although I did know what schedule they were on but didn't have it in front of me. Then they said that the product was probably not working because I bathed my dogs initially at the beginning 48 hours before application?? Their website TELLS you to bathe them before application (see 2nd screenshot posted)! I stopped bathing them after the 2nd application as it wasn't working and the dogs were miserable and only tried 2 cats (and really only 1 successfully because we all know how that goes). They then told me that I didn't give the product long enough?? Their website states (see 3rd screenshot) and is the same for Advantage II "K9 Advantix® II kills fleas within 12 hours. New fleas that jump on the dog from the surroundings, such as grass, carpet and pet bedding, are killed within 2 hours with protection against further infestation for at least 4 weeks." I tried their products, $600 worth on 6 animals, as scheduled, no missed doses for 4 months. I can’t blame it on just one animal or one batch—it didn’t work on 6, or one batch! I am very upset. Not only have I wasted money on these but I have bought corresponding products, sprays for the beddings, flea traps, etc. I FINALLY called Terminex and had to spend 12 hours clearing out under my beds, closets, getting everything off my floors, moving furniture etc. (time I will never get back) and getting my children and pets out of the house and went back to the brand that works: FRONTLINE! NO MORE FLEAS-- what I should have done in the first place. I am so upset not by the fact that the product didn't work but by the way the company handled it, dodging any responsibility from blaming it on the baths they recommend to the length of time I gave it when they could have just refunded me and had someone that isn't going to not only post this review every place I bought it (not just here) but every other place that allows a review to include social media.
Review photo Review photo Review photo
Thumbs up Would not recommend this product
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lfalexander
Posted 8 months ago
Posted 8 months ago
Breed Mixed
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
Did not work
We've been using this for 4 months and went in for our dog's annual check-up and she has tested positive for a tick-borne illness. We won't be using this brand again.
Thumbs up Would not recommend this product
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1-8 of 912 Reviews
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What is K9 Advantix II?

K9 Advantix II is a monthly preventative for dogs that offers comprehensive protection against ticks, fleas, mosquitoes, biting flies, and chewing lice. K9 Advantix II is a top veterinarian-recommended brand because it repels and kills all life stages of fleas (eggs, pupae, larvae, and adult fleas) and ticks (Deer ticks, American dog ticks, Brown dog ticks, and Lone Star ticks). K9 Advantix II kills 98-100 percent of fleas within 12 hours and continues working for one month to prevent infestations. Fleas and ticks are killed on contact with a treated dog, which means that fleas don't have to bite and ticks don't have to attach to die. This helps prevent transmission of flea-borne and tick-borne diseases such as tapeworms, Lyme disease, tick paralysis, ehrlichia, and Rocky Mountain spotted fever. Killing fleas before they bite may also help prevent skin allergies caused by flea saliva. As well, K9 Advantix II repels mosquitoes before they bite, which may help prevent transmission of heartworms. K9 Advantix II protects your pet before parasites have a chance to bite, not after.

For:

Dogs and Puppies (7+ weeks of age, weighing 4+ lbs)

Benefits:

  • Repels and kills disease-carrying fleas, ticks, and mosquitoes before they bite
  • Kills all life stages of fleas (eggs, pupae, larvae, and adult fleas) and ticks (Deer ticks, American dog ticks, Brown dog ticks, and Lone Star ticks)
  • Kills 98-100 percent of adult fleas within 12 hours
  • Ends flea life cycle by preventing flea offspring (eggs, pupae, and larvae) from maturing into adult fleas
  • Repels biting flies and kills chewing lice
  • Provides one month of protection against ticks, fleas, mosquitoes, biting flies
  • Waterproof - remains effective following a shampoo treatment, swimming or after exposure to rain or sunlight

How does K9 Advantix II work?

K9 Advantix II combines imidacloprid and permethrin to repel and kill fleas, ticks, and mosquitoes. Both ingredients work on contact, attacking parasite nerve cells at different sites. Together these ingredients overwhelm the nervous system killing the parasite. Pyriproxyfen is an insect growth regulator. K9 Advantix II topical solution also repels biting flies and kills lice.

Cautions:

DO NOT USE ON CATS. Cats cannot metabolize the ingredients used in this product. Cats must be separated from dogs during treatment. Do not allow your cat to come in contact with a treated dog for 24 hours. Some small and medium dogs may have an adverse skin reaction.

Brand Name:

K9 Advantix II (Bayer)

What is the most important thing I should know about K9 Advantix II?

The active ingredients in K9 Advantix II are Imidacloprid (8.8%), Permethrin (44.0%), and Pyriproxyfen (0.44%). K9 Advantix II is for use on dogs and puppies weighing 4 lbs or more and 7 weeks of age or older. It is used for the topical prevention and treatment of ticks, fleas, mosquitoes, biting flies, and chewing lice on dogs. K9 Advantix II repels and kills ticks including deer ticks (the major carrier of Lyme disease), American dog ticks, Brown dog ticks and lone star ticks. Additionally, K9 Advantix II repels and kills all life stages of fleas, repels and kills mosquitoes, kills chewing lice, and repels biting flies. K9 Advantix II is a non-prescription (OTC) product available as 0.014 fl oz (0.4 ml) applicators for dogs 4-10 lbs (Green), 0.034 fl oz (1.0 ml) applicators for dogs 11-20 lbs (Teal), 0.084 fl oz (2.5 ml) applicators for dogs 21-55 lbs (Red), and 0.135 fl oz (4.0 ml) applicators for dogs over 55 lbs (Blue).

What should I discuss with my veterinarian before giving K9 Advantix II to my pet?

Consult a veterinarian before using on medicated animals and debilitated, aged, pregnant or nursing animals.

How should K9 Advantix II be applied?

For use only on dogs. Do not use on cats or on other animals. Have your dog stand for easy application. Part the hair on your dog's back between the shoulder blades, until the skin is visible. For dogs up to 20 lbs, apply the entire contents of the applicator tube to 2 or 3 spots on the top of the back from the shoulder to the base of the tail. For dogs 21 lbs and over, apply the entire contents of the applicator tube to 4 or 6 spots on the top of the back from the shoulder to the base of the tail. If your household has cats or other pets, separate them from the treated dog for 24 hours.

What are the potential side effects of K9 Advantix II?

Monitor your dog after application. Side effects may include signs of skin irritation such as redness, scratching, or other signs of discomfort. Gastrointestinal signs such as vomiting or diarrhea have also been reported. If these or other side effects (such as lethargy or agitation) occur, consult your veterinarian or call 1-800-422-9874. Individual sensitivities, while rare, may occur after using any pesticide product for pets. A small percentage of dogs have had adverse reactions to K9 Advantix II. A sensation of burning, tingling, itching, redness or numbness of the skin may occur after topical application. This sensation usually begins 1-2 hours after application. In addition, reactions have occurred in cats that have been exposed to a medicated dog. That is why it is important to separate your cat from a medicated dog for 24 hours. Bayer, the manufacturer of K9 Advantix II, indicates that some of these symptoms will dissipate within 48 hours; however, if your pet is experiencing adverse reactions, please complete the following steps:

  • Stop applying the medication
  • Wash your dog with a detergent based soap (Dawn or Palmolive dish detergents work best). Do not scrub the affected area, as this may cause more skin irritation. Please note: This process is applicable for both dogs and cats.
  • Call your veterinarian
  • Call Bayer Emergency Support Line at 1-800-422-9874. Let Bayer know your dog is having an adverse reaction to K9 Advantix by calling 1-800-422-9874. This line is staffed 24 hours a day, 7 days a week.

What happens if I miss giving a dose of K9 Advantix II?

If you miss a dose, apply the next dose as soon as possible and resume a monthly schedule.

What happens if I overdose my pet on K9 Advantix II?

Contact your veterinarian or veterinary emergency room.

What should I avoid while giving K9 Advantix II to my pet?

This product is for external use only on dogs and puppies 4 lbs or more and 7 weeks or older. Do not get this product in your dog's eyes or mouth. Do not use this product on animals other than dogs. In households with cats, separate the treated dog for about 24 hours. Due to their unique physiology and inability to metabolize certain compounds, this product must not be used on cats. If applied to a cat, or ingested by a cat which actively grooms a recently treated dog, this product may have serious harmful effects. If this occurs, contact your veterinarian immediately. It is important to apply this product no more than once a month and to use the correct strength for the weight of the dog. This product is harmful to humans if swallowed. Call a physician or poison control center for advice. Have the patient sip water. Do not induce vomiting unless advised to and the patient is conscious. This product can cause substantial but temporary eye injury. Do not get in eyes or on skin or clothing. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet. Remove and wash contaminated clothing before reuse..

What other drugs will affect K9 Advantix II?

If your pet is on medication, consult your veterinarian before using this or any other product.

K9 Advantix II Directions:

HOW TO OPEN

  1. Be sure the tube is at the bottom of the pouch.
  2. Using scissors, cut the pouch across the top and remove the tube.

HOW TO APPLY

  1. Use only on Dogs. DO NOT USE ON CATS or other animals.
  2. Do not apply to dogs weighing less than 4 lbs.
  3. Remove the applicator tube from the package. Use scissors to peel down foil.
  4. Hold the applicator tube in an upright position. Pull the cap off the tube.
  5. Turn the cap around and place the other end of the cap back on the tube.
  6. Your dog should be standing for easy application. Evenly apply the entire contents of the K9 Advantix II tube to two or three spots on the top of the back from the shoulder to the base of the tail. At each spot, part the hair until the skin is visible. Place the tip of the tube on the skin and gently squeeze to expel a portion of the solution on the skin. Do not apply an excessive amount of solution at any one spot that could cause some of the solution to run off the side of your dog. Do not get this product in your dog's eyes or allow your dog to ingest this product.
  7. Discard the empty tube as described in Storage and Disposal.
  8. In cases of severe pest infestations, retreatment is allowable earlier than four (4) weeks. Do not retreat more of often than once every seven (7) days. After pest control is attained, return to a monthly retreatment schedule.
Tip:

In households with cats, separate the treated dog for 24 hours until the product is thoroughly dry.

K9 Advantix II Dosage for Dogs:

Dogs/Puppies (7+ weeks of age, weighing 4+ lbs):
Weight Amount
1-3 lbs Do not use
4-10 lbs Apply contents of 1 applicator once a month (Green Box)
11-20 lbs Apply contents of 1 applicator once a month (Teal Box)
21-55 lbs Apply contents of 1 applicator once a month (Red Box)
Over 55 lbs Apply contents of 1 applicator once a month (Blue Box)
K9 Advantix II Dosage for Cats:
Cats
Do not use!
K9 Advantix II Dosage for Horses:
Horses
Do not use!

Storage:

Do not contaminate water, food or feed by storage or disposal.

Environmental Hazards:

This product is extremely toxic to aquatic organisms, including fish and invertebrates. Do not add directly to water. Do not contaminate water when disposing of product or packaging.

Pesticide Storage:

Store K9 Advantix II in a cool, dry place. Protect from freezing.

Pesticide Disposal and Container Handling:

Nonrefillable container.

If empty:

Do not reuse this container. Place in trash or offer for recycling, if available.

If partly filled:

Call your local solid waste agency or 1-800-422-9874 for disposal instructions. Never place unused product down any indoor or outdoor drain.

Do not refrigerate. Store in the original container only. Do not reu

K9 Advantix II Ingredients:

K9 Advantix II for Dogs 4-10 lbs (Small Dog - Green Box) (0.4 ml):
Active Ingredients (per applicator tube) % By Weight
Imidacloprid 8.80%
Permethrin* 44.0%
Pyriproxyfen 0.44%
Other Ingredients (not specified) 46.76%
*cis/trans ratio: Max 55% (+/-) cis and min 45% (+/-) trans
K9 Advantix II for Dogs 11-20 lbs (Medium Dog - Teal Box) (1.0 ml):
Active Ingredients (per applicator tube) % By Weight
Imidacloprid 8.80%
Permethrin* 44.0%
Pyriproxyfen 0.44%
Other Ingredients (not specified) 46.76%
*cis/trans ratio: Max 55% (+/-) cis and min 45% (+/-) trans
K9 Advantix II for Dogs 21-55 lbs (Large Dog - Red Box) (2.5 ml):
Active Ingredients (per applicator tube) % By Weight
Imidacloprid 8.80%
Permethrin* 44.0%
Pyriproxyfen 0.44%
Other Ingredients (not specified) 46.76%
*cis/trans ratio: Max 55% (+/-) cis and min 45% (+/-) trans
K9 Advantix II for Dogs over 55 lbs (Extra Large Dog - Blue Box) (4.0 ml):
Active Ingredients (per applicator tube) % By Weight
Imidacloprid 8.80%
Permethrin* 44.0%
Pyriproxyfen 0.44%
Other Ingredients (not specified) 46.76%
*cis/trans ratio: Max 55% (+/-) cis and min 45% (+/-) trans

What is K9 Advantix II?

K9 Advantix II is a monthly preventative for dogs that offers comprehensive protection against ticks, fleas, mosquitoes, biting flies, and chewing lice. K9 Advantix II is a top veterinarian-recommended brand because it repels and kills all life stages of fleas (eggs, pupae, larvae, and adult fleas) and ticks (Deer ticks, American dog ticks, Brown dog ticks, and Lone Star ticks). K9 Advantix II kills 98-100 percent of fleas within 12 hours and continues working for one month to prevent infestations. Fleas and ticks are killed on contact with a treated dog, which means that fleas don't have to bite and ticks don't have to attach to die. This helps prevent transmission of flea-borne and tick-borne diseases such as tapeworms, Lyme disease, tick paralysis, ehrlichia, and Rocky Mountain spotted fever. Killing fleas before they bite may also help prevent skin allergies caused by flea saliva. As well, K9 Advantix II repels mosquitoes before they bite, which may help prevent transmission of heartworms. K9 Advantix II protects your pet before parasites have a chance to bite, not after.

For:

Dogs and Puppies (7+ weeks of age, weighing 4+ lbs)

Benefits:

  • Repels and kills disease-carrying fleas, ticks, and mosquitoes before they bite
  • Kills all life stages of fleas (eggs, pupae, larvae, and adult fleas) and ticks (Deer ticks, American dog ticks, Brown dog ticks, and Lone Star ticks)
  • Kills 98-100 percent of adult fleas within 12 hours
  • Ends flea life cycle by preventing flea offspring (eggs, pupae, and larvae) from maturing into adult fleas
  • Repels biting flies and kills chewing lice
  • Provides one month of protection against ticks, fleas, mosquitoes, biting flies
  • Waterproof - remains effective following a shampoo treatment, swimming or after exposure to rain or sunlight

How does K9 Advantix II work?

K9 Advantix II combines imidacloprid and permethrin to repel and kill fleas, ticks, and mosquitoes. Both ingredients work on contact, attacking parasite nerve cells at different sites. Together these ingredients overwhelm the nervous system killing the parasite. Pyriproxyfen is an insect growth regulator. K9 Advantix II topical solution also repels biting flies and kills lice.

Cautions:

DO NOT USE ON CATS. Cats cannot metabolize the ingredients used in this product. Cats must be separated from dogs during treatment. Do not allow your cat to come in contact with a treated dog for 24 hours. Some small and medium dogs may have an adverse skin reaction.

Brand Name:

K9 Advantix II (Bayer)

What is the most important thing I should know about K9 Advantix II?

The active ingredients in K9 Advantix II are Imidacloprid (8.8%), Permethrin (44.0%), and Pyriproxyfen (0.44%). K9 Advantix II is for use on dogs and puppies weighing 4 lbs or more and 7 weeks of age or older. It is used for the topical prevention and treatment of ticks, fleas, mosquitoes, biting flies, and chewing lice on dogs. K9 Advantix II repels and kills ticks including deer ticks (the major carrier of Lyme disease), American dog ticks, Brown dog ticks and lone star ticks. Additionally, K9 Advantix II repels and kills all life stages of fleas, repels and kills mosquitoes, kills chewing lice, and repels biting flies. K9 Advantix II is a non-prescription (OTC) product available as 0.014 fl oz (0.4 ml) applicators for dogs 4-10 lbs (Green), 0.034 fl oz (1.0 ml) applicators for dogs 11-20 lbs (Teal), 0.084 fl oz (2.5 ml) applicators for dogs 21-55 lbs (Red), and 0.135 fl oz (4.0 ml) applicators for dogs over 55 lbs (Blue).

What should I discuss with my veterinarian before giving K9 Advantix II to my pet?

Consult a veterinarian before using on medicated animals and debilitated, aged, pregnant or nursing animals.

How should K9 Advantix II be applied?

For use only on dogs. Do not use on cats or on other animals. Have your dog stand for easy application. Part the hair on your dog's back between the shoulder blades, until the skin is visible. For dogs up to 20 lbs, apply the entire contents of the applicator tube to 2 or 3 spots on the top of the back from the shoulder to the base of the tail. For dogs 21 lbs and over, apply the entire contents of the applicator tube to 4 or 6 spots on the top of the back from the shoulder to the base of the tail. If your household has cats or other pets, separate them from the treated dog for 24 hours.

What are the potential side effects of K9 Advantix II?

Monitor your dog after application. Side effects may include signs of skin irritation such as redness, scratching, or other signs of discomfort. Gastrointestinal signs such as vomiting or diarrhea have also been reported. If these or other side effects (such as lethargy or agitation) occur, consult your veterinarian or call 1-800-422-9874. Individual sensitivities, while rare, may occur after using any pesticide product for pets. A small percentage of dogs have had adverse reactions to K9 Advantix II. A sensation of burning, tingling, itching, redness or numbness of the skin may occur after topical application. This sensation usually begins 1-2 hours after application. In addition, reactions have occurred in cats that have been exposed to a medicated dog. That is why it is important to separate your cat from a medicated dog for 24 hours. Bayer, the manufacturer of K9 Advantix II, indicates that some of these symptoms will dissipate within 48 hours; however, if your pet is experiencing adverse reactions, please complete the following steps:

  • Stop applying the medication
  • Wash your dog with a detergent based soap (Dawn or Palmolive dish detergents work best). Do not scrub the affected area, as this may cause more skin irritation. Please note: This process is applicable for both dogs and cats.
  • Call your veterinarian
  • Call Bayer Emergency Support Line at 1-800-422-9874. Let Bayer know your dog is having an adverse reaction to K9 Advantix by calling 1-800-422-9874. This line is staffed 24 hours a day, 7 days a week.

What happens if I miss giving a dose of K9 Advantix II?

If you miss a dose, apply the next dose as soon as possible and resume a monthly schedule.

What happens if I overdose my pet on K9 Advantix II?

Contact your veterinarian or veterinary emergency room.

What should I avoid while giving K9 Advantix II to my pet?

This product is for external use only on dogs and puppies 4 lbs or more and 7 weeks or older. Do not get this product in your dog's eyes or mouth. Do not use this product on animals other than dogs. In households with cats, separate the treated dog for about 24 hours. Due to their unique physiology and inability to metabolize certain compounds, this product must not be used on cats. If applied to a cat, or ingested by a cat which actively grooms a recently treated dog, this product may have serious harmful effects. If this occurs, contact your veterinarian immediately. It is important to apply this product no more than once a month and to use the correct strength for the weight of the dog. This product is harmful to humans if swallowed. Call a physician or poison control center for advice. Have the patient sip water. Do not induce vomiting unless advised to and the patient is conscious. This product can cause substantial but temporary eye injury. Do not get in eyes or on skin or clothing. Wash thoroughly with soap and water after handling and before eating, drinking, chewing gum, using tobacco or using the toilet. Remove and wash contaminated clothing before reuse..

What other drugs will affect K9 Advantix II?

If your pet is on medication, consult your veterinarian before using this or any other product.

K9 Advantix II Directions:

HOW TO OPEN

  1. Be sure the tube is at the bottom of the pouch.
  2. Using scissors, cut the pouch across the top and remove the tube.

HOW TO APPLY

  1. Use only on Dogs. DO NOT USE ON CATS or other animals.
  2. Do not apply to dogs weighing less than 4 lbs.
  3. Remove the applicator tube from the package. Use scissors to peel down foil.
  4. Hold the applicator tube in an upright position. Pull the cap off the tube.
  5. Turn the cap around and place the other end of the cap back on the tube.
  6. Your dog should be standing for easy application. Evenly apply the entire contents of the K9 Advantix II tube to two or three spots on the top of the back from the shoulder to the base of the tail. At each spot, part the hair until the skin is visible. Place the tip of the tube on the skin and gently squeeze to expel a portion of the solution on the skin. Do not apply an excessive amount of solution at any one spot that could cause some of the solution to run off the side of your dog. Do not get this product in your dog's eyes or allow your dog to ingest this product.
  7. Discard the empty tube as described in Storage and Disposal.
  8. In cases of severe pest infestations, retreatment is allowable earlier than four (4) weeks. Do not retreat more of often than once every seven (7) days. After pest control is attained, return to a monthly retreatment schedule.
Tip:

In households with cats, separate the treated dog for 24 hours until the product is thoroughly dry.

K9 Advantix II Dosage for Dogs:

Dogs/Puppies (7+ weeks of age, weighing 4+ lbs):
Weight Amount
1-3 lbs Do not use
4-10 lbs Apply contents of 1 applicator once a month (Green Box)
11-20 lbs Apply contents of 1 applicator once a month (Teal Box)
21-55 lbs Apply contents of 1 applicator once a month (Red Box)
Over 55 lbs Apply contents of 1 applicator once a month (Blue Box)
K9 Advantix II Dosage for Cats:
Cats
Do not use!
K9 Advantix II Dosage for Horses:
Horses
Do not use!

Storage:

Do not contaminate water, food or feed by storage or disposal.

Environmental Hazards:

This product is extremely toxic to aquatic organisms, including fish and invertebrates. Do not add directly to water. Do not contaminate water when disposing of product or packaging.

Pesticide Storage:

Store K9 Advantix II in a cool, dry place. Protect from freezing.

Pesticide Disposal and Container Handling:

Nonrefillable container.

If empty:

Do not reuse this container. Place in trash or offer for recycling, if available.

If partly filled:

Call your local solid waste agency or 1-800-422-9874 for disposal instructions. Never place unused product down any indoor or outdoor drain.

Do not refrigerate. Store in the original container only. Do not reu

K9 Advantix II Ingredients:

K9 Advantix II for Dogs 4-10 lbs (Small Dog - Green Box) (0.4 ml):
Active Ingredients (per applicator tube) % By Weight
Imidacloprid 8.80%
Permethrin* 44.0%
Pyriproxyfen 0.44%
Other Ingredients (not specified) 46.76%
*cis/trans ratio: Max 55% (+/-) cis and min 45% (+/-) trans
K9 Advantix II for Dogs 11-20 lbs (Medium Dog - Teal Box) (1.0 ml):
Active Ingredients (per applicator tube) % By Weight
Imidacloprid 8.80%
Permethrin* 44.0%
Pyriproxyfen 0.44%
Other Ingredients (not specified) 46.76%
*cis/trans ratio: Max 55% (+/-) cis and min 45% (+/-) trans
K9 Advantix II for Dogs 21-55 lbs (Large Dog - Red Box) (2.5 ml):
Active Ingredients (per applicator tube) % By Weight
Imidacloprid 8.80%
Permethrin* 44.0%
Pyriproxyfen 0.44%
Other Ingredients (not specified) 46.76%
*cis/trans ratio: Max 55% (+/-) cis and min 45% (+/-) trans
K9 Advantix II for Dogs over 55 lbs (Extra Large Dog - Blue Box) (4.0 ml):
Active Ingredients (per applicator tube) % By Weight
Imidacloprid 8.80%
Permethrin* 44.0%
Pyriproxyfen 0.44%
Other Ingredients (not specified) 46.76%
*cis/trans ratio: Max 55% (+/-) cis and min 45% (+/-) trans
Customer ratings Customer ratings
Overall Rating
Customer ratings4.1 /5
912 reviews
5 Star symbol
617
4 Star symbol
75
3 Star symbol
28
2 Star symbol
36
1 Star symbol
156

Overall effectiveness
4.1
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1-8 of 912 Reviews
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Vicky
Posted 3 weeks ago
Posted 3 weeks ago
Breed (1)Chihuahua & a (1) Chihuahua/Cocker Spaniel mix
Rating
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Overall effectiveness
5.0
Highly Recommended!!
After coming across this one and done product many years ago(after trying flea collars, tick stuff & mosquito repellent) I will never use anything else. Its quick and easy to apply & doesn't have any side effects. It has a repellent for fleas and ticks so the bugs don't go on them. If by chance they do jump on they will be killed on first bite. GREAT STUFF!!
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Marilyn
Posted 1 month ago
Posted 1 month ago
Breed Shitzu
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
K9 Advantix II
I purchased this product for my dogs and it did not work. I called customer service and they told me that it had to be used for 3 months before the product would get rid of the fleas. My dogs are inside dogs and only go out to play and potty so they are not living outdoors with the flea population. If you have to use it for 3 months before it works what is the point except for them to be able to sell more product.
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Cruz
Posted 1 month ago
Posted 1 month ago
Breed Lab
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
Same name, different results
Few years ago I used this product and it worked great, however whatever they did with the formula is not the same today, the effectiveness is no longer there. I used a product called ACTIVYL which was highly effective. Well today that product is no longer for sale here and I wonder why. Was it so effective it was taking sales away from other brands? Whatever the case. Advantix no longer does the job it once claimed to do.
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Tilly
Posted 3 months ago
Posted 3 months ago
Breed Golden
Rating
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Overall effectiveness
5.0
Excellent Control of fleas and Ticks
This product works excellent for control of fleas and Ticks. I highly recommend this product. My dogs never get fleas or Ticks when on this medication.
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Chris8550
Posted 6 months ago
Posted 6 months ago
Breed Boston terrier
Rating
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Overall effectiveness
2.0
Used to work but isn’t doesn’t work
Used to work but now isn’t working... I don’t know if the fleas got used to it or if the bad batch or something else
Thumbs up Would not recommend this product
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Fldog
Posted 6 months ago
Posted 6 months ago
Breed Shepherd
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
Completely ineffective
I purchased this last month and have treated my dog twice as indicated on the box. It states treatment can be repeated 7 days after the first application. My dog has been scratching a lot the last few days. I just gave him a bath and there were a ton of fleas. I might as well buy have bothered with this treatment. What a waste of money and my dog has been suffering with the little bloodsucking pests. I will never purchase this brand again.
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Intelhottie
Posted 7 months ago
Posted 7 months ago
Breed 2 mutts, 4 cats
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
$600+ wasted over 4 months and absolutely NO impro
I was on frontline for years but when I thought I saw a couple fleas on my dogs in September 2020, I decided to make a switch to Advantage II for my cats and Advantix II for my dogs--- BIGGEST mistake of my life (seriously, like over any horrible exes). I have $515.97 in receipts I submitted to the company (which was as horrible as the experience, which I will get to) and spent an additional $70 in store (in which I cannot find the receipt) since September 2020 to December. I followed every tip on the website and insert and my animals were still covered. I applied perfectly. I applied initially weekly, vacuum daily, steam cleaned, wash bedding constantly, etc. I don’t even have carpet but on the stairs and have treated the stairs and couches with Predcor. I even bought those flea traps with the sticky bottoms. I am not including any of this in that total I spent-- that was all on the flea medications themselves for the 6 animals. I have saved some, not all, of the vials so on 11/13 I called Elanco. They denied my request for any type of refund. They questioned my exact dosage dates and frequency more than a doctor wants to know about your menstrual cycles but I took my best guesses, for all 6 animals although I did know what schedule they were on but didn't have it in front of me. Then they said that the product was probably not working because I bathed my dogs initially at the beginning 48 hours before application?? Their website TELLS you to bathe them before application (see 2nd screenshot posted)! I stopped bathing them after the 2nd application as it wasn't working and the dogs were miserable and only tried 2 cats (and really only 1 successfully because we all know how that goes). They then told me that I didn't give the product long enough?? Their website states (see 3rd screenshot) and is the same for Advantage II "K9 Advantix® II kills fleas within 12 hours. New fleas that jump on the dog from the surroundings, such as grass, carpet and pet bedding, are killed within 2 hours with protection against further infestation for at least 4 weeks." I tried their products, $600 worth on 6 animals, as scheduled, no missed doses for 4 months. I can’t blame it on just one animal or one batch—it didn’t work on 6, or one batch! I am very upset. Not only have I wasted money on these but I have bought corresponding products, sprays for the beddings, flea traps, etc. I FINALLY called Terminex and had to spend 12 hours clearing out under my beds, closets, getting everything off my floors, moving furniture etc. (time I will never get back) and getting my children and pets out of the house and went back to the brand that works: FRONTLINE! NO MORE FLEAS-- what I should have done in the first place. I am so upset not by the fact that the product didn't work but by the way the company handled it, dodging any responsibility from blaming it on the baths they recommend to the length of time I gave it when they could have just refunded me and had someone that isn't going to not only post this review every place I bought it (not just here) but every other place that allows a review to include social media.
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Thumbs up Would not recommend this product
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lfalexander
Posted 8 months ago
Posted 8 months ago
Breed Mixed
Rating
Star symbol Star symbol Star symbol Star symbol Star symbol
Overall effectiveness
1.0
Did not work
We've been using this for 4 months and went in for our dog's annual check-up and she has tested positive for a tick-borne illness. We won't be using this brand again.
Thumbs up Would not recommend this product
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