AHH warm water? are you nuts? lol. maybe a tiny bit on a micro-fiber cloth, but don't think of trying to "gently splash" a bit of water on there. Oh and definatley not windex. If you read the online "how-to" cleaning guides on apple.com, i think it specifically says not to use that stuff. At least on iBooks. The magic eraser is really gentle on stuff. I use it on my iBook all the time and it makes it look brand new.