Proven formula - Contains fipronil and (S)-Methoprene, the same active ingredients as Frontline Plus for cats Effective - This flea and tick topical kills fleas, flea eggs and larvae, chewing lice, and all stages of ticks including those that may transmit Lyme disease Waterproof - use on your cat monthly, no need to reapply after swimming or bathing 3 month supply - includes 3 applicators for 3 months of flea and tick Prevention; Apply these flea drops Once every 30 days Trusted quality - made in Germany in a certified eu-gmp facility, tested to meet rigorous standards of quality and consistency Continuous protection - your cat is protected Tip to tail for up 30 days after application Age range description: all life stages