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Can I use Advantage spray and K9 Advantix II on my dogs for fleas?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | neutered

My dogs are 11, 13 and 15. I wanted to know if it was ok to use advantage treatment spray for dogs on them as well as K9 Advantix II for fleas.

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on October 26th, 2019

You really should only need one or the other product. Putting both products on at the same is not recommended. If you are using Advantix II and you are still seeing fleas then I suggest you switch to another flea prevention.

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