Zodiac FleaTrol Flea & Tick Spray with PRECOR Insect Growth Regulator controls fleas, ticks, flea larvae and mosquitoes. It combines the adult flea killing power of pyrethrins with the long-lasting egg-killing power of PRECOR Insect Growth Regulator. This highly effective combination of ingredients provides quick relief from biting fleas and continuous killing of flea eggs laid on the animal, breaking the flea life cycle for up to 2 months. For dogs, cats, puppies and kittens over 12 weeks of age. Shipping weight: 1 1/4 lbs.