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.

Living in Florida, fleas and other parasites can be present year 'round. We have a cat with a flea allergy, and Stronghold keeps her flea free and comfortable, it's easy to apply, and most importantly for our family, it's affordable, as we have 6 rescue cats. Simpy stated, Stronghold works!

Very happy with Stronghold. We are a multicat household & also foster other cats. Stronghold is extremely effective for fleas, earmites, & other parasites. It's also one of the safest products out there. The vet that I work for highly recomnends it to many of our clients.

Stronghold is just perfect for my cats who are spoiled and don´t want to swallow pills in any shape, not even when you mic it with meat or put it in melted cheese. It is very easy to put on cats, it protects them for a month and the price is ok. in my country you can buy it only on a recepie and not in all towns, so I am happy that you exist. Thank you.

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.