Not sure if it works because I use it on my feral kitties that I can pet, but not well enough that I can check them for fleas. But the kitties I do use it on look pretty good, which I suspect may be related to the flea meds.

This Stronghold is an excellent product for our cats! quick delivery and excellent customer service.

Have used this formula for many years have great healthy kitties.

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 use this instead of revolution since I have a colony of a lot of cats and I cant afford revolution. I noticed that this works the same and does the same so I buy this for my cat colony. It saves me money and its a great product.