Review (5/5): This is IT!!!
If you have the deep cracks that make your life unhappy- THIS is what you have been searching for. I read the reviews and was well aware I would be purchasing the equivalent of a sander, however using a power tool on my body scared me. (Despite the fact I was ready to invite flesh eating bacteria to my soles)
This absolutely does the job and please don't let the reviews scare you that you WILL be burnt. I used a "tap, tap, tap" method and it was not painful at all.
After trying everything under the sun for years, I feel that I have finally found a solution.
Btw- this happens to be the first review I have felt the need to leave after over 500+ Amazon buys.