Frontline Plus Dogs 45-88 lbs Flea Tick Treatment Kills Eggs & Larvae 3 PackFrontline Plus for Dogs 45 88 lbs, 3 Pack, uses fipronil to kill adult fleas and ticks, and (S) methoprene to attack flea eggs and larvae. Kills fleas within 24 hours, ticks within 48 hours, and breaks the flea life cycle to help prevent infestations. Waterproof and lasts up to 1 month per application. 3 applicators included. Key Points: 3 pack Frontline Plus for dogs 45 88 lbs Kills fleas in 24 hrs, ticks in 48 hrs Destroys flea eggs & larvae; breaks