My cat has fleas after Advantage. What flea treatment works?

Question

My cat has a lot of fleas and scratches/bites to the point where she is losing hair in some spots. I put Advantage II on her at the beginning of the month. Do you think it's safe to give her revolution or a flea collar? What would you recommend? Pet's info: Cat | Domestic Shorthair | Female | spayed | 8 lbs

Jennifer Summerfield, DVM CPDT-KA · Accepted Answer

Advantage is generally a pretty effective flea medication for cats, so I'm surprised to hear that it hasn't been working well for Lily. If you want to try a different medication for her, I would suggest Revolution - I usually see good results with it for flea control, and it also prevents heartworms and intestinal parasites. As long as it's been at least two weeks since you applied the Advantage, it should be fine to go ahead and apply a dose of Revolution. I don't generally recommend flea collars for cats, as they tend not to work very well and can often be toxic for them. You may also want to use a flea spray such as Knock-Out to treat your house and yard, as it's possible that Lily is continuing to pick up fleas from the environment - this can make it much more difficult for any flea medication to work correctly.

My cat has fleas after Advantage. What flea treatment works?

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