Well, how long does it take for that dirt to build up? You're going to get some of that residue on the laptop after awhile (months) just because of the natural oil on your hands. Just some normal rubbing alcohol should do the trick, just be careful not to put too much on the cloth you're using so that it doesn't leak into the keyboard, and more importantly, what's underneath...
As for the scratch, I don't know, hopefully someone else will have a suggestion...
|