Review (5/5): Works better than a pumice stone and it more sanitary
I had been using some man-made pumice stone thing for years, but it was getting gross and I tossed it. I got this foot rasp instead. I only use the smoother side for my heels. During the summer my heels get dirty and dry from walking around the house with no shoes. I keep this rasp in the shower. I rub a bar of soap across it and then smooth/clean my heals. It works very well and doesn't rub the skin raw like a pumice stone does. There are no little nooks and crannies for mold to breed like with a holey pumice stone. It can also be sterilized. I wish I had discovered this years ago.