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My cats have fleas even after Frontline Plus. What works best?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed

I have two cats they are treated for fleas monthly with front line plus. I have used the flea smoke bombs on several occasions over the past year and have also used a flea shampoo. The cats were last treated for fleas less than a week ago, they are still covered in fleas. Is there anything else i can use? I am at the end of my tether. Many thanks Jo.

1 Answer

Most Helpful Answer

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Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on October 12th, 2017

I'm sorry to hear that you're having this problem! Fleas can be very frustrating to get rid of in some cases. I will tell you that in my experience, Frontline Plus is not effective at all anymore for fleas - I regularly see pets who are using this product and still covered in fleas. Advantage II is the most effective over-the-counter topical flea product for cats. Stronghold or Advocate, which are prescription flea meds you can get from your vet, would be even better. Once you get the cats on a good quality flea control medication, it should be much easier to eliminate them from the environment.

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