Fiproguard MAX for cats uses the same veterinarian-recommended active ingredient, fipronil, found in Frontline® brand products.* But with Fiproguard MAX, the power of fipronil is maximized with the addition of a second active ingredient, etofenprox.Starts to kill both fleas and ticks quickly.Maintains that high efficacy for 30 days.Kills chewing lice.Works so fast, it prevents reinfestation of fleas, ticks and chewing lice.Reduces the pet's exposure to flea bites, a leading cause of flea allergy dermatitis and anemia.Protects your cat and your family against the diseases fleas and ticks spread, including Lyme disease.For use on kittens and cats 12 weeks of age and older.Waterproof.Produced in the U.S.*Frontline® and Top Spot® are registered trademarks of Merial. SENTRY® Fiproguard™ is not manufactured by or distributed by Merial. Fiproguard™ contains fipronil, the active ingredient used in Frontline® Top Spot®. Pricing based on MSRP of Fiproguard™ and retail price survey of Frontline® Top Spot® as of February 15, 2012.