FRONTLINE Plus Flea and Tick Treatment for X-Large Dogs Up to 89 to 132 lbs. 8 TreatmentsKeep your dog protected from fleas & ticks all month long with FRONTLINE Plus for Dogs a fast acting, waterproof flea & tick topical that's proven to kill fleas, flea eggs, flea larvae, chewing lice, and ticks that can transmit Lyme disease Break the flea life cycle with FRONTLINE Plus, 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