🐶 Keep your furry friend flea-free and fabulous! Simple topical drops for hassle-free use. Stay active without worrying about reapplication! Trusted ingredients, same as FRONTLINE Plus for Dogs. Effectively disrupts flea life cycle for lasting protection. One application lasts up to 30 days, 6 doses for 6 months. Waterproof 6 Doses Fast Acting PetArmor Plus Flea and Tick Prevention for Dogs is a powerful waterproof topical treatment designed for large dogs (45-88 lbs). With a trusted vet-quality formula containing fipronil and (S)-methoprene, it effectively kills fleas, ticks, and chewing lice while breaking the flea life cycle. One application lasts up to 30 days, and the 6-dose package provides protection for up to 6 months.