
actually Brian, my nail tech has a small version of that, battery operated just for callous feet!
The blades and such are illegal for nail techs to use here in Florida, as they can cut deep and cause infections etc. Good enough reason for me not to buy my own too!
I use a pumice stone, and love the Avon handled emery cloth item to smooth it. Callouses don't form overnight, so I know I can't get rid of them in a day or two either. My feet are in good shape after going to the nail tech for a pedicure every 2 weeks (I really can't reach my feet that well.) I also put surgeon's secret on my heels at night, and am more careful about going barefoot so much. (PT doesn't want me to go barefoot at all, but grrr I used to be known as the barefoot girl of xxxx drive!)