Cleaning game discs

[spider-man]

Does anyone know what would be the best method of cleaning dirty cds that wipes alone could not clean (caked in grime). I was thinking of using 90% isoporyl alcohol, but I got mixed messages on that. So should I just get a brand name cleaning solution? If so, which one would you recommend. Thanks in advance.

[BigGeorgeJohnson]

I usually use a dry tissue first, and if that doesn't get it clean I add a little window cleaner. Always works for me with no problems.