Stronghold/Revolution protects cats (and dogs) against heart worms, among other critters, and heart worms are very dangerous. I find the product very effective and safe, and have been using it for many years.

Finally, I've found a product, Stronghold, that doesn't make my cat sluggish or her hair fall out at the application site. For the first time in a long time, she plays with toys, chases her tail, and seems happy.

The caustic cost is good and the product is good. I like the regular delivery, too.

My pets (2) have been using this product for years now, as a vet recommendation. It Works!! have never had a problem. Very satisfied.

I can now afford to give all four of my cats meds they need for earmites and other conditions they have. It was very difficult to get meds from local vet and expensive. Thanks.