Yep! We use them on our kitties. The first couple times though, when we first put them on, Angel and Dillian would try to PULL them off of their claws. It takes them a while to get used to it, but they do work.

Here's the *official* Soft Paws website:
http://www.softpaws.com/

All of the information you would need is pretty much on that site.