Topical flea and tick squeeze-on provides three-way protection that kills fleas, ticks and chewing lice. It kills deer ticks that transmit Lyme disease as well as brown dog ticks, American dog ticks and lone star ticks. It also controls mites that may cause sarcoptic mange. Waterproof. Can be used on breeding, pregnant and lactating dogs. Box contains 3 tubes of fast acting and long lasting, sustained release formula, which protects for up to 30 days. Contains the active ingredients: Fipronil.