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K9 Advantix II

Starts $60.61 $43.64 
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Product Info
How to Use
Ingredients
Customer Reviews
Q&A
Product Info
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 (only over 4 lbs and 7 weeks of age or older)

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 - continues working even after your dog becomes wet
How it works:

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)

Active Ingredient(s):

Imidacloprid (8.8%), Permethrin (44.0%), Pyriproxyfen (0.44%), Other ingredients (46.76%)

What is this product used for:

K9 Advantix II is for use on dogs and puppies 4 lbs or more and 7 weeks of age or older only. It is used for the topical prevention and treatment of ticks, fleas, mosquitoes, biting flies, and chewing lice on dogs. Repels and kills ticks including deer ticks (the major carrier of Lyme disease), American dog ticks, Brown dog ticks and lone star ticks. K9 Advantix II repels and kills all life stages of fleas, repels and kills mosquitoes, kills chewing lice, and repels biting flies.

Availability:

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).

How this product should be used:

For use only on dogs. Do not use on cats or on other animals. Have the dog standing for easy application. Part the hair on the 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 the household has cats or other animals, separate from the treated dog for 24 hours.

What are the side effects:

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 special precautions are there:

This product is for external use only on dogs and puppies 4 lbs or more and 7 weeks or older. Consult a veterinarian before using on medicated animals and debilitated, aged, pregnant or nursing animals. Do not get this product in 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 patient sip water. Do not induce vomiting unless advised to and the patient is conscious. This product can cause eye irritation. Flush eyes with plenty of water. Call a physician if irritation persists. Avoid contact with skin, eyes or clothing. Wash thoroughly with soap and water after handling.

In the event of overdose:

Contact your veterinarian or veterinary emergency room.

How should I store this product:

Store this product in a cool, dry place. Do not refrigerate. Store in the original container only. Do not reuse original container. If the container is empty place in trash or offer for recycling if available. If the container is partially filled, call for disposal instructions. Never place unused product down any indoor or outdoor drain.

How to Use
Directions:
  • Use only on dogs over 4 lbs and over 7 weeks of age. Do not use on cats or on other animals.
  • Your dog should be standing for easy application.
  • The entire contents of K9 Advantix II tube should be applied evenly to 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.
  • 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.
  • Use only one applicator per treatment.
Tip:

In households with cats, separate the treated dog for 24 hours until the product is thoroughly dry. Visit K9 Advantix II Adverse Reactions if your pet has been experiencing adverse reactions to K9 Advantix II.

Dosage:
Dogs/Puppies:(7 weeks of age and older)
Weight
Dosage
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)
Cats:
Do not use!
Horses:
Do not use!
Storage:

Should be stored in a cool dry place. Do not refrigerate.

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 Reviews
K9 Advantix II is rated 3.7085615451138656 out of 5 by 3,469.
Rated 5 out of 5 by from great price same as what i got from vet, only instead of $22.60 for one treatment $108 for 10. Half price!
Date published: 2016-09-17
Rated 5 out of 5 by from More than just fleas I used this brand because my dog's ears were getting eaten by flies. I have 3 and only one was having this problem. I used a salve on it, but you cannot use the salve on the wounded area (go figure!) I asked my vet and he recommended either the brand they sell, or this. This was cheaper so I went with it. I never see fleas on my dogs unless I wait way to long between treatments. And, the fly issue - no longer an issue.
Date published: 2016-09-12
Rated 1 out of 5 by from Bought from 1800petmeds Bought 1 month ago from this site and have used 4 or 5 things and not one worked. I took off seresto collar since its "lifespan" was almost up, and put this on.. big mistake. But I would not have noticed if my dog wasn't WHITE the fleas were hiding but very much alive. Never had a flea with seresto but wanted something my puppy couldnt get off. Now I spent over $50 for my dog to get fleas and have to be put out! Def not worth a dime. She was not wet or had been wet for over 36 hours. I read and followed the rules carefully. It's just junk and a waste of money. BUT I am glad I have a white dog or else I wouldn't have seen them!
Date published: 2016-08-31
Rated 5 out of 5 by from Loving it. It has been a life saver. Tried everything this year that I normally used and none of it worked. This has been great
Date published: 2016-08-31
Rated 5 out of 5 by from Great Product This is a flea medicine that works, we tried frontline plus last month on our dogs and it didn't work at all. So I read the reviews for K9 Advantix and everyone had great things to say so I decided I would give it a try. Within a hr the fleas started to disappear from my dogs.I'm so thankful I found a flea medicine that finally works
Date published: 2016-08-31
Rated 4 out of 5 by from Works well so far ! I just ordered this product and put it in several spots on his back and looked in his fur the next day, after he was crawling with flees, and now there all gone !
Date published: 2016-08-31
Rated 5 out of 5 by from Awesome! Thought I'd try this, since Front line stopped working for our pet. Great product!!
Date published: 2016-08-30
Rated 5 out of 5 by from Great Product!! I have been buying this for several years. We live in the country and want to keep fleas & ticks off our dog and out of our house. This product does just that!
Date published: 2016-08-27
  • 2016-09-28T06:02CST
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Q&A

Our puppy is only three pounds but is eight weeks old.  Is this produce still save to use?  He is a Maltese/Schitzue mix.  The package states the puppy should weigh at least 4 pounds.

Asked by: Corey
It is not recommended to use K9 Advantix in a puppy weighing under 4 lbs. However, there are other flea and tick treatments available for 3 lb dogs, such as Advantage II, Revolution, Sentinel, and Comfortis. You may want to speak with your vet for the best option for your puppy.
Answered by: Christine
Date published: 2016-09-28

This product did not work for my small shih tzu. I am very disappointed, because I switched from a natural product that didn't work to K9 advantatix.

Asked by: Kitt16y
Please call us at 1-800-738-6337 or email us at customerservice@1800petmeds.com so we can take care of this for you.
Answered by: Cherley Petmeds Pro
Date published: 2016-09-13

My dog is 20.6 lbs. Which dose should I use?

Asked by: stebonie
The correct dosage would be the 11-20 lbs tube.
Answered by: Cherley Petmeds Pro
Date published: 2016-08-30

Do you require a prescription for this item?

Asked by: Connie
No you do not need a prescription for Advantix II.
Answered by: paulpharmacistintern
Date published: 2016-08-18

hi I just bought k9 advantix ii I was wonder if I have to shower my dog before applying it 

Asked by: Rose
It's not necessary, but might make administering easier with a clean coat.
Answered by: paulpharmacistintern
Date published: 2016-08-17

I have been told it was not safe to use K9 Advantix II along with Heartguard...Is that true?

Asked by: Jmiller2010
These medications can be used together normally. Contact your veterinarian about concerns for your specific pet.
Answered by: paulpharmacistintern
Date published: 2016-08-11

My puppy is only 6 months. Is he too young, for this?

Asked by: henry
It can be used on your puppy. It can be started on dogs 7 weeks of age or older
Answered by: paulpharmacistintern
Date published: 2016-08-11

How long does the first application last

Asked by: Roland 58
Each application provides one month of protection against ticks, fleas, mosquitoes, biting flies.
Answered by: paulpharmacistintern
Date published: 2016-08-10
  • 2016-09-28T06:18CST
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