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My dog uses Advantix but chews his butt. Can I add flea spray?

Updated on September 23rd, 2025

Pet's info: Dog | Chihuahua | Male | neutered | 13 years and 5 months old | 5 lbs

I use k9 advantix II on my 5lb chi but he's chewing on his butt. Can I use a flea spray on him, too...just his behind?

1 Answer

Most Helpful Answer

Sara Farmer, DVM

Answered By Sara Farmer, DVM

Veterinarian

Published on July 13th, 2017

It would be okay to use something like Frontline spray along with Advantix but I would not use any other spray as it could cause toxicity. If you are still seeing live fleas you could ask your veterinarian about a medication to quickly kill the adults like Capstar. If there are scabs on Simon's behind he may have flea dermatitis and need antibiotics and/or a corticosteroid.
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