Sentry FiproGuard Plus Squeeze-On Dog Flea & Tick Treatment is a fast-acting, long-lasting squeeze-on formula made to help protect your canine companion against dangerous pests. It’s formulated to kill fleas, flea eggs, flea larvae, ticks and chewing lice for up to 30 days. By killing flea eggs and larvae, this treatment helps break the flea life cycle. It also helps kill ticks that may transmit Lyme disease, providing your pup with even greater protection! This squeeze-on solution is waterproof, long lasting, fast acting and is intended to be used on dogs who are 8 weeks of age and older, weighing 89 to 132 pounds.