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K9 Advantix II

Starts $60.61 $43.77 
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04-10 lbs
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21-55 lbs
55 lbs & up
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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 K9 Advantix II 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 3.7137 out of 5 by 3,510.
Rated 5 out of 5 by from Finally! A flea product that worked!! We've had a persistent flea problem for the first time in our 13 years of having dogs for 2 months now with no complete resolutions! Finally! After reading PetMeds thorough description of Advantix & using the product along with their recommendations on a complete treatment plan, we have complete relief & eradication of fleas!
Date published: 2017-01-21
Rated 5 out of 5 by from Great Flea and Tick med. I've been using K9 advantix for 8 years because we live out with the Deer and this has tick repellent . We have never had fleas or ticks on our dogs but the neighbors dogs has. Know they use it too.
Date published: 2017-01-20
Rated 5 out of 5 by from Great preventative for dogs and cats I have been buying K9 Advantix II from 1-800 Pet Meds for over 5 years. I have tried other products but this one is the BEST. We have 2 dogs and 1 cat and all of them are on Advantix II. Haven't had any issues in all these years. They are inside pets, but romp in the yard and at the dog park. We love this product.
Date published: 2017-01-17
Rated 5 out of 5 by from Have been purchasing this product for a while with great success
Date published: 2017-01-14
Rated 5 out of 5 by from finally some relief! use K9 Advantix II for flea and tick control and most definitely use HEARTGUARD for HEARTWORMS!
Date published: 2017-01-14
Rated 4 out of 5 by from K9 advantix Been buying from 800petmeds for nearly 5 years and have never had a flea or tick on either Corgi even in Spring/Summer months. Always our go-to site for preventative items.
Date published: 2017-01-08
Rated 5 out of 5 by from Never had a flea or tick in years! No fleas or ticks on my previous dog who passed away of old age nor on my new one after almost three years. The first dog was a an Aussie/GSD/Husky mix at 45 lbs and my current dog is a 55 lb Husky. We live in NorCal and hike, frequent beaches, and go to grassy dog parks all over. I'm a foster mom and put K9 Advantix on my new foster dogs as soon as they step in my door and haven't had any issues. Sometimes I think I ought to try one of the newer brands but I'm afraid to jinx it!
Date published: 2017-01-06
Rated 4 out of 5 by from Working great I've been using K9 Advantix II for about 3 years on both of my dogs and it works great. I live in New England where we have to worry about ticks, mosquitoes & fleas. Before using it I found 1 tick on one of my dogs luckily I found the tick before it attached to cause issues. We also had a small flea infestation that I was able to correct with one washing & one deep cleaning session. After that I refused to put my dogs through that again & started using K9 Advantix II. It's been working great & haven't had any other issues.
Date published: 2016-12-31
  • 2017-01-22T06:04CST
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Q&A

My dog is 9 lb...I used the right stuff for my size dog....I still see flees on my dog

Asked by: Lauri
In order for K9 Advantix to kill fleas, they need to bite your pet to ingest the medication. Therefore, any new fleas that attach to your dog may bite him before they ingest the medication and die. This may be causing the itchiness and scratching your dog is experiencing. It is also important to treat the surrounding environment for fleas, to prevent new fleas from attaching to your dog. However if you purchased the medication from us we do offer a 100% guarantee on all our products.
Answered by: Amy Petmed Pro
Date published: 2017-01-16

I bought the 11-20 lbs but now my puppy is 22 lbs will it work for him i have 2 more bottles

Asked by: Kpuppy
It is recommended to apply the dose that corresponds to your furry family's weight to assure effectiveness. We offer a 100% guarantee on all of our products. If you provide your customer or order number we will be happy to refund or offer you a merchandise credit for the applications that you are unable to use.
Answered by: Amy Petmed Pro
Date published: 2017-01-05

Can I put advantix 2 on my dog that is wet or damp?

Asked by: Kyle
It is recommended to apply this product to your pet while he/she is dry.
Answered by: Amy Petmed Pro
Date published: 2017-01-03

How many applications is there in one box? 

Asked by: Debbie
The 4pk has 4 applications, the 6pk has 6 applications, etc.....
Answered by: Amy Petmed Pro
Date published: 2016-12-28

Does it kill ear mites? 

Asked by: Svance
This product does not kill ear mites...
Answered by: Amy Petmed Pro
Date published: 2016-12-20

My dog's weight fluctuates between 20 and 21 pounds. Which dose should I order?

Asked by: Kate
If your furry baby is normally on the lower side, you will go with the 11-20 lbs. If your furry baby is normally 21 lbs and over, you will go with the 21-55 lbs.
Answered by: Cherley Petmeds Pro
Date published: 2016-12-15

My dog weighs about 110 lbs but needs to gain about 15 lbs more. How many packages do I need to buy? I noticed your largest size reads it's for dogs 55lbs & up.

Asked by: CC runner
You will need to order the over $55 pounds and you will only use 1 tube per month.
Answered by: Carolyn Petmed Pro
Date published: 2016-12-06

Do u ship to canada?

Asked by: SuzyQ
Yes, we do ship to Canada. It is $14.99 for 10 to 14 business days.
Answered by: Carolyn Petmed Pro
Date published: 2016-11-29
  • 2017-01-22T06:23CST
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