I've already noticed some small fine scratches on my glass, I guess from cleaning. I've tried to just use a paper towel and glass plus, but it has a hard time getting off the smoke. What I found that works well is a damp paper towel with a little ash on it. That is even what the maker of my stove, Pacific Energy, suggested to use to clean off the glass. I think that the ash is leaving some small scratches on the glass though. I know you can get some cleaner, but I don't like using that corrosive cleaner. It seems like a lot of trouble and dangerous to use it. I would probably get it on me or something. So, are scratches just part of having a stove with glass in the door?