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Why does my kitten still have fleas after treatment and a collar?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | unspayed | 5 lbs

My kitten seems to continue to get fleas even after treatment and a flea collar. I don’t know what else to do.

2 Answers

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on September 11th, 2019

I'm sorry, fleas are the worst. I can give you a flea treatment program for Carmen that has always worked for me. Make sure you take off the flea collar before doing it, and also make sure it's been at least two weeks since you applied the last treatment. First, I would give her Capstar. It's a one time pill that starts killing fleas within 30 minutes. Then follow up with a spot on treatment, such as Advantage or Revolution. This is a treatment that has to be used once a month. You will also have to disinfect the environment. Wash her bedding in hot soapy water, and vacuum the furniture and carpet surfaces. You can use a spray to kill fleas in the house, such as Indorex, or a flea bomb would work well to kill the fleas in the home.

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Other Answers

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    Answered By Linda G, MS, DVM

    Veterinarian

    Published on February 8th, 2018

    Hello. You are correct that Program does not kill adult fleas, but with regular use, will break the flea life cycle & eliminate your flea problem. But this takes time. You can purchase an additional product called Capstar that will start killing adult fleas in 30 minutes. You can give this every day if you want. You can also purchase a Seresto collar which kills fleas up to 8 months. The better products that you can purchase from your veterinarian are Comfortis, a monthly flea pill, & Bravecto, a great topical that you apply once every 3 months. Hopefully, one of these will help with your flea problems. Thanks for using Petco Pet Education Center, formerly Petcoach.

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