Too "natural" for my tastes
I presume this is designed for folks like me who have heel callouses that are thick and hard to remove. You can't get much more heavy-duty than an actual rock to scrape off those pesky callouses and dried skin, but instead of actually removing it, it just seems to tear them apart, leaving ragged skin. I still have to go back over it with my battery-powered mini-ped to smooth it out. Plus, it is rough on  your hands as you use it.
Rating: 3 stars