FRONTLINE Gold has a new triple action formula. It has 3 secret weapons: fipronil and (S)-methoprene and now a powerful new third ingredient, pyriproxyfen which helps to kill the next generation of flea eggs and larvae before they can develop into adult fleas. Regular use of FRONTLINE Gold helps prevent new flea infestations making it relentless at killing fleas, flea eggs and larvae, as well as ticks.
FRONTLINE Gold for Dogs starts killing fleas in just 30 minutes.* In a study, it killed 100% of fleas on dogs within 12 hours of infestation.*
*When infested 48 hours after application.
Plus when you purchase 3 doses you receive 1 dose free and when you purchase 6 doses you receive 2 doses free!