CD/DVD Clean Cloths (20 pc.) clean contaminants and residue from your optical discs to ensure successful recording and playback. Optical discs can accumulate dirt, dust, fingerprints, and other contaminants due to handling and exposure to adverse conditions. These contaminants can affect the performance levels of the disc and cause errors during recording/playback. CD/DVD Clean Cloths protect the delicate surfaces of your discs when wiping them clean.