🐾 Keep your pup protected—because they deserve the best! Stop infestations in their tracks with powerful active ingredients. Enjoy peace of mind with a formula that withstands baths and rain. Join the ranks of satisfied pet owners who trust FRONTLINE Plus! Defend your furry friend against fleas, ticks, and more! One easy application lasts a full month—no hassle, just protection. Flea & tick protection Waterproof formula 30-day efficacy FRONTLINE Plus Flea and Tick Treatment for Large Dogs is a fast-acting, waterproof topical solution designed for dogs weighing 45 to 88 lbs. Each package contains three treatments, providing a full month of protection against fleas, ticks, and chewing lice. Formulated with fipronil and (S)-methoprene, it effectively breaks the flea life cycle and prevents future infestations. Trusted by pet owners for over 20 years, it's easy to apply and safe for puppies as young as eight weeks.