There is also a manual cleaner called Disco-Antistat, made by Knosti. It's a trough with built in cleaning brush and spindle which holds the disc and protects the label, a litre bottle of cleaning fluid, and a drying rack. It's worked very well so far, and cost me about £45 complete a couple of years ago. I've just bought a second bottle of fluid, after cleaning several dozen discs. Several companies supply it. Just google 'knosti'.