Bayer K9 Advantix II Flea, Tick and Mosquito Prevention for X-Large Dogs, Over 55 lb, 6 doses

Kills and repels 5 of the most common parasites on dogs. Easy to apply, this once-a-month topical, kills all stages of the flea lifecycle for complete protection thanks to its IGR (Insect Growth Regulator) ingredient, pyriproxyfen. Waterproof.

Kills ALL life stages of fleas and prevents development of fleas, flea eggs, larvae, and pupae REPELS and kills ticks, fleas, and mosquitoes. REPELS biting flies and kills lice, too Kills fleas within 12 hours & kills reinfesting fleas within 2 hours Prevents further flea infestation for at least 4 weeks Remains effective even after swimming or shampooing