About this item
Hartz First Defense is a fast acting, long lasting monthly treatment that contains Fipronil, the active ingredient used in Frontline(R) Top Spot(R). Kills fleas, ticks, chewing lice and prevents and controls re-infestation for 30 days. Features the patented Pro-cision Flo(R) applicator system that penetrates pet hair allowing for application of treatment at skin level. For use only on cats & kittens 8 weeks and older weighing more than 3 lbs. Package contains 3 monthly treatments.