Petcor® 2 Flea & Tick Spray features (S)-methoprene, an insect growth regulator (IGR). This molecule prevents flea larvae from developing into nuisance breeding, biting adults. While (S)-methoprene disrupts the reproductive cycle, Etofenprox, affects the insect’s nervous system following direct contact or ingestion. 16 oz bottle.

• Contains an Insect Growth Regulator (IGR) to kill flea eggs and larvae
• Provides quick relief from biting fleas
• Continuous killing of flea eggs laid on the animal
• For use on dogs, puppies, cats and kittens