When it comes to treating a flea infestation, there have always been two paths to follow: One is to treat the environment where the fleas are developing, and the other is to treat the pet itself.

Dear Dr. Fox: In a recent column, you mentioned a safe flea control for cats. I don't like using the chemical ones such as Advantage or Revolution. My cat does go out, supervised, for about 15 minutes ...

Hartz UltraGuard topical liquid products for cats all contain the active ingredient etofenprox. Etofenprox is classified as a synthetic non-ester pyrethroid that is effective against fleas and ticks.

In a recent column, you mentioned a safe flea control for cats. Although I’ve not seen fleas, he does have small scabs around his neck that I think are flea bites. He’s very jittery if I investigate ...

A new paper in Environmental Toxicology and Chemistry finds that common medications used for flea and tick control in dogs ...