Hello- I had a problem with a DVD I rented from Blockbuster that prevented me from seeing the very end of the movie. I noticed one small scratch and a lot of cloudy residue of some sort covering the disc. I have seen employees "cleaning" the DVDs with some sort of chemical from a small spray bottle. I told the manager about the situation and mentioned the residue. First he told me that it is not a chemical, it is acetone (which I avoided arguing with him about). He says that it is not residue, it just dries that way (avoided that one, too). Then he says that acetone will not harm the plastic (on the DVD) and that he is a chemistry major at the University of CO. Somebody help me here... does anyone use acetone to clean their DVDs? What do you use to clean your DVDs? Is this guy a royal jackass? My experience with acetone suggests that the cloudy residue which can also contain some pretty clear fingerprints is the "cleaner" reacting with the plastic.