SENTRY Fiproguard MAX is a topical flea and tick treatment that contains the same veterinarian-recommended active ingredient, fipronil, found in Frontline® brand products.5 But with Fiproguard MAX, the power of fipronil is maximized with the addition of a second active ingredient. In fact, Fiproguard® MAX for dogs starts to kill fleas and ticks in JUST 5 MINUTES! Test results show that it kills faster than Frontline® Plus!6 It also prevents more flea bites than either Frontline® Plus or K9 Advantix® II7, which means less pain and potential for the spread of diseases for your pet. Fiproguard MAX kills so fast, it prevents reinfestation from fleas, ticks and chewing lice. That speed and power remain throughout the entire month, protecting your pets and your home for 30 days.