Frontline Plus for Dogs is a topical flea and tick treatment that effectively eliminates these parasites and their life stages, offering protection for up to a month. Its active ingredients, fipronil and (s)-methoprene, work in concert to kill adult fleas, prevent re-infestation, and disrupt the life cycle of fleas and ticks. Safe for all breeds and effective even after swimming or bathing, this treatment is suitable for pregnant and nursing dogs.