What is the best way to clean a disk?
The shortest answer to this is, if a disk plays without any problems, it is best not to try cleaning it. If the disk cannot be read successfully, try removing fingerprints and smudges using a soft, dry cloth. It is best to rub the disk from the center outward toward the outer edge. If a disk is badly scratched, some have had success using car wax or toothpaste to remove the scratches. If, when you hold a disk up to a light, you can see scratches through the disk label, chances are the disk cannot be saved and should be discarded.