The company Sanwa introduced a convenient and useful in the household device, designed for cleaning CDs. CD-RE1AT Puts Shine Back can clean CDs, DVDs, and BDs from dust, “fingers”, and grease stains.

In addition, the “cleaning” can form a “protective layer” of the disc. How exactly CD-RE1AT is not known. Grinds, or what?
Worth CD-RE1AT $ 79. Expensive, of course. But if a run through this device helps to clean up a readable, filthy, utterly untidy disk, that changes everything.
via
Gizmodo