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At a Glance
Kills fleas and ticks within 12 hours
Kills flea eggs, pupae, larvae, and adults for 30 days
Kills and protects against mosquitoes, which are the primary cause of heartworm
Protect your dog from a variety of disease carrying ticks

K9 Advantix II for Dogs

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Pet Size
Don't know your pet's weight?
If you can't get them on the scale, try this super simple method:

1) Weigh yourself.
2) Weigh yourself holding your pet.
3)Subtract the two numbers to get their weight.

Too heavy to hold? Your vet will weigh them if you ask (or may already have it on file if you call).
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Rated 4.5 out of 5 by 614 reviewers.
Rated 5 out of 5by Works PerfectlyWe use a Sentinel heartworm medicine that also eliminates fleas, and this flea medicine only make it extreme on protection. We have been around dogs and cats that did have fleas and our dog has not had 1 single flea touch him. The double wammy of meds keeps him flea free. 12/03/2018
Rated 4 out of 5by K9 Advantix II works!I've been using this for 2 years now and it keeps my two dogs flea and tick free. 09/09/2018
Rated 5 out of 5by No FleasWe have 5 dogs, 3 Goldens & 2 Labs...product works great. 07/26/2018
Rated 1 out of 5by time for a changeI have used this product for 3 years. I have always found ticks on my 3 dogs but was told that even when they bite thru the skin the ticks will die. Now, I have been finding full ticks on them and one of my dogs was just diagnosed with anaplasmosis in her bloodwork. Fortunately, she does not show symptoms but the vet treated her with a long course of antibiotics. Last month, I switched her to Bravecto but kept my other two Goldens on K9 (I have a years supply still) This month, I have not found any ticks on my Bravecto dog and I have found several on my K9 Advantix dogs! I am know getting rid of all the unused K9 and switching all my dogs to Bravecto. There is also a $15 online rebate available for Bravecto. 06/05/2018
Rated 5 out of 5by good valueproduct was mailed fast, works great 06/05/2018
Rated 5 out of 5by Works great - less smellyVirtually no smell - unlike Hartz First Defense 05/30/2018
Rated 5 out of 5by Don't Recall Using Anything Else!!My baby girl is 13 and we adopted her from a Golden Retriever Rescue society in Dallas when she was 5. Sadie is our third golden and we've used Advantix II for all of them and have never had fleas or ticks or any other unwanted critters on them or in our house. All of our dogs are mainly indoor but do go outside several times a day for walks and just to check out anything new in the neighborhood. We've always had cats also and even though we don't use Advantix on them, they're the proof that the dogs don't bring anything inside. So I'm a very happy camper and will always use this product. Thank you. 05/08/2018
Rated 5 out of 5by Greatest flea/tick productWe started using this product with our Shelties 18 years ago. Only had one incident with a tick years ago. I truly recommend this product. It's easy to apply and waterproof. You just can't go wrong! 04/23/2018
Rated 5 out of 5by Great product!I have been using k9 Advantixll on my dog for 2 years! I have never seen a flea. Keep up the good work. I like the fact that k9 Advantixll repels and kills fleas, ticks and mosquitoes and it is waterproof! 02/22/2018
Rated 5 out of 5by no odorno odor (unlike other products), no fleas! 12/11/2017
Rated 5 out of 5by This product works well. If we find a flea on the animals when they come in from outside, the flea is usually acting sick from the K9 Advantix II or is dead. 07/19/2016
Rated 5 out of 5by Works on mosquitos This is the only flea and tick topical that also works on mosquitos. I highly recommend this product. I have been using it on my dog for 14 years. 07/04/2016
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