keeps the fleas off cats

The grocery store had a half off sale on combined with 1.00 coupon and doubling that week made the 3 pack of Hartz ultra Guard One spot treatment for cats and kittensa almost free. We own 2 cats one very sensitive to fleas.We treated them and even with spring weather seems to be working well in preventing fleas. The package contained 3 tubes with treat a cat for 30 days against Flea eggs and larvae. It is easy to dispense and seems better than most store brands I have tried. Its active ingredient is Methoprene 2.9%. You can buy vetrinarian suggested flea treatments but they cost at least twice as much normal retail. If you own cats, I suggest you keep a look out for sales, coupons and treat them monthly. IN Virginia climate, at least April through December if not year round to avoid flea population returning and bothering your cats. If you have rugs and flea infested cats potetially fleas also getting on humans. Overall a Hartz flea isgood product and when on sale and/or coupons a extreme value.