Vetality Firstect Plus for Cats Over 1.5 LB 3-Dose offers vet-quality protection from fleas and ticks and prevents all flea stages from developing. Vetality Firstect Plus topicals eliminate fleas, flea eggs, ticks, and lice. These vet-quality topicals contain the same active ingredients (fipronil + (S)-methoprene) as the leading vet brand, FRONTLINE Plus for cats, but cost less.