K9 Advantix II Flea & Tick Protection for Dogs, 4.5 kg & under, 4 doses

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About This Item

Details

  • This easy-to-apply topical treatment can be used monthly for year-round protection.
  • Formulated to kill fleas and ticks on contact, K9 Advantix II also kills lice and mosquitoes!
  • Breaks the flea life cycle to help treat and control flea infestations in the home.
  • Safe for dogs and puppies ages eight weeks and older—do not use on cats.
  • This tick, flea, lice and mosquito treatment for dogs can help prevent parasitic concerns such as flea allergy dermatitis, skin infections, Lyme disease and heartworm disease.

Ingredients

Questions & Answers

15 Customer Questions

is advantix a heartworm medication?

Originally posted and answered on chewy.com
Answer by Ebland • Jun 12, 2022
K9 Advantix is a treatment that repels and kills fleas, ticks and mosquitoes on dogs.

Do you need a prescription to purse purchase Advantix

Originally posted and answered on chewy.com
Answer by NefertitiM • May 26, 2022
K9 Advantix II Flea & Tick Spot Treatment does not require a prescription.

Are there side effects from using Advantix for small dogs

Originally posted and answered on chewy.com
Answer by Teresab • Apr 06, 2022
We haven’t experienced any! We hold our dog a few minutes until the drops have time to dry ( she tries to wipe it off in her dog bed)

I have two puppies toy poodle 6 and 7 pounds, do I have to keep the separate for 12 hours or any suggestions of what can I do, to be on the safe side. Like maybe keep them separate for 12 hours. Or wearing clothes after the 12 hours or after; what are your suggestions?

Originally posted and answered on chewy.com
Answer by ReneeI • Mar 24, 2021
Do not allow the dogs to lick any of the application sites and keep separated for 30 minutes.
Reviews
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4.4
Rated 4.4 out of 5 stars
1643 Ratings
Terms & Conditions

744 Customer Reviews

Always consult a veterinarian about your pet’s health needs. Customer reviews should not be used as medical advice.

Rated 5 out of 5 stars
By Warren on May 4, 2025

Good Product & Price

We found this product to be competitively priced and the delivery was very fast. I used to buy from Amazon but will now buy from chewy. Also bought dog treats. Chewy

We found this product to be competitively priced and the delivery was very fast. I used to buy from Amazon but will now buy from chewy. Also bought dog treats. Chewy is my go to place for the dog from now on

Rated 5 out of 5 stars
By Lorie on Nov 22, 2024

Best of of

Yes I would I don't normally like to use it but I am forced to use it for reasons I'm not going to explain. The one bonus is that it's a lot cheaper than the ve

Yes I would I don't normally like to use it but I am forced to use it for reasons I'm not going to explain. The one bonus is that it's a lot cheaper than the vet

Rated 5 out of 5 stars
By Mark on Oct 31, 2024

Works great

Worked like a charm, fleas totally gone. All it took was 3 dabs on the back, simple to use.

Worked like a charm, fleas totally gone. All it took was 3 dabs on the back, simple to use.

Rated 5 out of 5 stars
By muplante on Aug 14, 2024

provide the best protection

use that product fore more than 5 years, wouldn't trust any other product for my 2 dogs.

use that product fore more than 5 years, wouldn't trust any other product for my 2 dogs.

Rated 3 out of 5 stars
By Tammy on Dec 8, 2025
Originally posted on chewy.com

My dog kept itching

My dog was good for several days and started itching again. It wasn’t as bad as it had been but it still didn’t get rid of the fleas completely. I get it’s not from

My dog was good for several days and started itching again. It wasn’t as bad as it had been but it still didn’t get rid of the fleas completely. I get it’s not from the vet but I used this product before and it worked really well. Maybe it just works differently on each dog. I’m going to stick with it and see if it gets better over the next few months. If not I will have to reevaluate.

Rated 4 out of 5 stars
By vannah on Nov 1, 2025
Originally posted on chewy.com

Effective at flea control but

my dog unfortunately seems to be allergic to the active ingredients and has been moderately itchy at the application site for 2 days. Not the fault of the product

my dog unfortunately seems to be allergic to the active ingredients and has been moderately itchy at the application site for 2 days. Not the fault of the product and is a common side effect. We will have to try a different product

Rated 5 out of 5 stars
By Nancy on Nov 24, 2025
Originally posted on chewy.com

No more fleas

We recently moved across the state and noticed our old flea treatment system wasn’t working very well. Local vet recommended this product and it has taken cont

We recently moved across the state and noticed our old flea treatment system wasn’t working very well. Local vet recommended this product and it has taken control.

Rated 2 out of 5 stars
By Linda on Oct 19, 2025
Originally posted on chewy.com

The first tube I open was dry out

I open it and went put on mila and nothing came out I try open it wider and shook it bit was dried out. These are to expensive to lose even one dose im going look

I open it and went put on mila and nothing came out I try open it wider and shook it bit was dried out. These are to expensive to lose even one dose im going look at other options see if there something better for my pumpkin mila

Rated 5 out of 5 stars
By Renita on Jan 20, 2026
Originally posted on chewy.com

Ticks/Fleas

No fleas and only one tick and it was dead when removed. Great product!!!!!

No fleas and only one tick and it was dead when removed. Great product!!!!!

Rated 1 out of 5 stars
By YorkieMom on Jul 30, 2025
Originally posted on chewy.com

Caused Scratching & Burning

Caused excessive burning and scratching to the point one dog hurt her back leg trying to keep scratching at the back of her neck. I only gave her about half a dose

Caused excessive burning and scratching to the point one dog hurt her back leg trying to keep scratching at the back of her neck. I only gave her about half a dose. She walked on 3 legs and had to be carried up and down the stairs for several days. I got a few drops on my skin by accident and had to put aloe on it for a few hours due to the burning of my skin. I gave them a bath approximately 18 hours later and they were still trying to scratch where I originally put it. Finally calmed down after several days.