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My cat still has fleas after Advantage. What flea treatment can I use?

Updated on September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered | 11 years and 7 months old | 14 lbs

My 11 year old cat has fleas for first time. I used Advantage 11 on him 15 days ago, but still have fleas dropping off him onto me. Also using Diatomaceous Earth on all floors and vacuuming. Can I use SteelCoat Plus on him before the Advantage 30 days is up?

2 Answers

Most Helpful Answer

Ricardo Fernandez, DVM

Answered By Ricardo Fernandez, DVM

Veterinarian, Veterinary Oncology Resident

Published on August 13th, 2019

Thanks for using Petco Pet Education Center, formerly Petcoach! Yes, you may in about 5-6 days. However, I would highly recommend you use a stronger and likely more efficacious product. There are plenty of flea products in the market and a lot of them are very effective. I prefer Bravecto and Frontline plus. You can pick one of those products. The nice thing about Bravecto is that it is very effective and it is only applied once every 3 months. You can also use a product called Capstar along with one of the previously mentioned products which can help kill a lot of fleas at once. Remember to vacuum all the surfaces that have contact with your pup regularly. This is very likely going to work well. Good luck and have a great day!
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Related Answers from Veterinarians

  • Answered By Destini R. Holloway, DVM

    Veterinarian

    Most topical products have to have at least a 2 week lapse, so it is best to wait a full 2 weeks before applying the SteelCoatPlus if that is what you want to use. However, I would just suggest purchasing a higher quality flea product that will work the full 30 days such as Revolution or Cheristin. These are better products to use for your cat Shadow.
    I would also recommend using a flea fogger for environmental control. You can purchase this from your local Home Depot or Lowes.
    Best wishes with Shadow moving forward. Take care!

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    1Pet Parents found this answer helpful

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