Features:

  • Veterinarian-recommended flea and tick prevention for dogs and mosquito repellent for dogs
  • Kills through contact. No biting required
  • Kills all flea life stages
  • Starts killing fleas within 10 minutes
  • Waterproof
  • Brought to you by Bayer
  • Do not use on cats
  • Packaging may vary
We decided this would be worth a shot and so glad we did

This is the only thing that works on my dogs! We tried those ultra expensive collars, we tried pills, other topicals, all natural remedies such as Tea Tree Oil, but nothing worked! My pups were miserable. We decided this would be worth a shot and so glad we did!

Flea free

Works well for my chihuahua. Haven’t seen one flea on her since I began using it .

Easy to apply and dog doesn’t have any reaction to the product.

My dog will not eat the prescription tablets from our vet no matter how we disguise them. She suggested k-9 advantix ll. It has worked great. No flea or ticks and the mosquitoes leave him alone and come after me. This is our fourth month to use this product and we are very pleased with it.

I was using the more expensive brands thinking they would help - but they would cause my little girl to break out in horrible rashes and almost like chemical burns

The only flea treatment that's worked on my babies for the past three years. I was using the more expensive brands thinking they would help - but they would cause my little girl to break out in horrible rashes and almost like chemical burns, she was miserable. Since I've switched to Advantix, there haven't been any fleas. I love it. I suggest it to everyone having issues whether it be with cats or dogs.

No more fleas

Great stuff our new pooch had a few fleas and we ordered this and by the next day they were gone. Our little guy is only eight pounds and We were happy with results

Used this on 4 small breed dogs over the years ...

Used this on 4 small breed dogs over the years and it's my go-to flea/tick product. It never disappoints. Also, it works extremely fast. I do suggest not bathing your dog the day before, day of, and day after using this medication for optimal use.

Great results, worthy investment.

I didn't really think fleas were a big deal so I purchased the Walmart brand flea medicine for my dogs and called it a day. Well, our apartment was taken over by fleas before we even realized what they were (and it was basically impossible to get rid of them, we spent a LOT of money on different flea killers and nothing worked so a preventative is definitely the cheaper route). Once we moved I wanted to make sure that NEVER happened again so I searched online for hours for the best flea treatment and I wanted the best of the best but since I have two dogs of totally different weight sizes I would have to buy two of whatever product (one is small and the other dog is massive) which ends up being very costly when one pill is over one hundred dollars. So I did some further research and decided on K9 Advantix II (as well as Cap Star) and I was weary of it at first because the Walmart brand was also a topical and it did absolutely nothing. Once I gave my dogs the Cap Star along with the K9 Advantix II the scratching stopped after 30 minutes and its been over a month and there are STILL no fleas or scratching. Of course its time to reapply the K9 Advantix II but it definitely worked and its a reasonable price when you have to buy two packs at a time. Im never switching and I highly recommend it as well as the Cap Star to go with it.

Works great on my chihuahua

Does work on smaller dogs. I live in the country and this is the product I buy for mine. I have tried all different kinds but this one works the best on my dog.

Better than seresto collars

We’ve had an on going flea problem since moving to the country. And I’ve bought everything under the sun. From diy remedies to expensive seresto collars. And I’m happy to say we are flea free after using the K9!!!! My neighbor recommended this and I’m extremely thrilled she did as we were battling fleas for almost 2 years straight.

It's the same as the original

I purchased for our little bengie type dog. It works very well and no problem with the usual throw ups some dogs have after first applying. The smell is pleasant as far as this type of product can be. It works as expected on fleas. Not summer yet here, so have no idea if will work for ticks and mosquitoes.

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