About This Effective, Waterproof Flea Treatment for Dogs: PetArmor Plus small dog flea treatment is a waterproof, flea & tick topical prevention for dogs that kills fleas, flea eggs, flea larvae, ticks, and chewing lice for up to 30 days after application Trusted, Vet Quality* Formula: Containing fipronil and (S)-methoprene, the same active ingredients as FRONTLINE Plus for Dogs. PetArmor Plus for Dogs has a powerful formula that starts to kill fleas within 24 hours Break the Flea Cycle: Unlike other flea and tick treatments that may temporarily suppress activity, PETARMOR Plus dog flea & tick control works by effectively breaking the life cycle! Kill eggs and larvae to prevent reinfestation Fast Acting Long-Lasting Flea and Tick Protection: One application of our flea and tick treatment for dogs lasts up to 30 days, nose to tail. A 12-dose package lasts one year Easy-to-use, Long-Lasting: PetArmor Plus flea control for dogs comes with twelve (12) waterproof topical applications that provide your pet flea protection and control for twelve (12) months, or one year