I use a discwasher D4 system which I got at a Sound Advice store. It includes a bottle of cleaner, a cleaning pad mounted on a block of wood and a small brush to clean the pad with and it's worked well for a long time. Wether it's still available or not I can't say but the address on the bottle is: discwasher, Columbia,MO 65201, USA.

Good luck, Frankie