I've been using this pad to clean the burn pot on my Enviro VF-100 . It has lasted a year and a half with no signs of wearing out. The only thing you have to watch out for is that it will sand the metal on the pot too. It's a little pricey($37.00) but the durabilaty of this thing seems to outweigh that issue Here's the link
http://www1.mscdirect.com/cgi/NNSRI...re=ItemDetail-_-ResultListing-_-SearchResults
http://www1.mscdirect.com/cgi/NNSRI...re=ItemDetail-_-ResultListing-_-SearchResults