Frontline Plus for DogsFRONTLINE Plus for Dogs is a fast acting, long lasting flea & tick topical treatment thats proven to kill fleas, flea eggs, flea larvae, chewing lice, and ticks that can transmit Lyme disease. Break the flea life cycle FRONTLINE Plus for Dogs is specially formulated with fipronil and (S) methoprene to kill existing adult fleas, flea eggs, and flea larvae to guard against further infestations for flea control. FRONTLINE Plus for Dogs can be used on