SENTRY® Fiproguard® Plus contains fipronil, the #1 vet-recommended active ingredient2, and (s)-methoprene to protect against fleas, flea eggs, flea larvae, ticks and chewing lice. This fast-acting and long-lasting squeeze-on breaks the flea life cycle by killing flea eggs and larvae. SENTRY® Fiproguard® Plus is just as effective against fleas and ticks as FRONTLINE® Plus.1
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