I bought one for my dog and it was not a good experience. We followed the directions, and three of us tried it, but the dog hated it. When the nail would make initial contact, it was a little rough and made a loud grinding noise, which scared the dog. She kept trying to pull her paw away. When we would try again, it just didnt' seem to work very well, or be very easy like they show on the commercials. We ended up returning ours.