Cat flea treatment FAQs Veterinarians say topical ... it kills fleas at all life stages and protects against chewing lice and ticks. Frontline Gold protects against the same parasites as Plus ...

Fipronil is a phenylpyrazole antiparasitic agent indicated for the treatment of fleas, ticks, and chewing lice infestations in both dogs and cats. All Frontline products for fleas and ticks also ...