VET QUALITY FORMULA: SENTRY Fiproguard is a vet-quality formula flea treatment that contains fipronil.

DOG FLEA AND TICK CONTROL: SENTRY Fiproguard topical flea and tick prevention for dogs kills fleas, ticks and chewing lice for up to 30 days.

TICK PREVENTION: Fiproguard for dogs also kills brown dog ticks, American dog ticks, lone star ticks and deer ticks (which may transmit Lyme disease).

LARGE DOGS: Flea and tick control for use on dogs and puppies over 8 weeks of age, weighing 45-88 pounds; can be used on breeding, pregnant, and lactating dogs.