I use a Discwasher rotary cleaner (don't think it's available now-but Radioshack or your local CD store sells a similar kind of product for about $15) which I may have to replace shortly as I'm on the last of the replaceable pads. You spray the disc with a cleaning solution, which is isopropyl (sp?) alcohol based, insert it, and crank away. Wouldn't be without one, especially for used CD's and rental DVD's. Then I treat 'em with Auric Illuminator.