Protect your extra-large dog from bothersome fleas and ticks with PetLock Plus for Dogs. This powerful topical treatment is designed for dogs weighing between 89 and 132 pounds. Each package contains three doses, providing three months of protection. PetLock Plus contains fipronil and (S)-methoprene, the same active ingredients as the leading brand, offering effective and reliable flea and tick control. It kills fleas, flea eggs, and larvae, breaking the flea life cycle to prevent re-infestation. Additionally, PetLock Plus kills and repels ticks, including those that may transmit Lyme disease, and chewing lice. This treatment is fast-acting, long-lasting, waterproof, and easy to apply. Simply apply the solution to your dog's skin between the shoulder blades once a month for continuous protection. Benefits: * Kills fleas, flea eggs, and larvae * Kills and repels ticks, including those that may transmit Lyme disease * Kills chewing lice * Contains fipronil and (S)-methoprene * Monthly topical application * For dogs 89-132 lbs * Waterproof formula * 3-dose supply