Apparently, a much over-looked, but very effective way to get that really good pedicure... is to stick your toes into a tank full of Carp and let them nibble away.

The AP wrote about it here.

I am a workoholic that dreams of running a marathon soon, and I often take off and run long distances without having trained consistently. This is not a good way to take care of one's feet. But certainly should ensure that the Carp in my tank won't go starving anytime soon.