Undercoating removal recipes

This tool is on the market any one ever use it?
http://www.tooltopia.com/index.asp?PageAction=VIEWPROD&ProdID=9984

I've used a wire wheel on my 4 1/2 inch grinder and works ok
you just have to make sure you don't get it caught on an edge
I've got a couple burns to prove it.
I'm gonna try the dried ice for sure