Flea, tick, and chewing lice treatment for cats & kittens older than 8 weeks, and over 1-1/2 pounds. Delivers premium protection and a fast and effective treatment. Kills fleas on contact, kills all stages of ticks, and kills lice rapidly. Each tube prevents flea and tick re-infestations for 1 month. Each box includes 3 tubes, which is a 3-month supply. Waterproof formula stays on and doesn't rub off. Effective even after bathing and exposure to water and sunlight.