Fiproguard Plus Flea & Tick Squeeze-On for Dogs is fast acting, squeeze-on topical protection against fleas, ticks and chewing lice. Fiproguard Plus is the first approved generic equivalent to Frontline Plus, and contains Fipronil and (S)-methoprene, the same active ingredients used in Frontline Plus. It's able to control flea reinfestation for up to 3 months by killing fleas at all life stages. Fiproguard Plus kills ticks which can cause Lyme Disease and controls mites that may cause sarcoptic mange. It is also waterproof, staying active after baths.