Kuroyanagi

Yesterday while rummaging through the remains my destoryed home in the New Orleans area I found part of my live recorded MD collection. Anyway, I rinsed off the cases, but the discs inside are covered with a fine-grained muck. I was wondering if there were any tips for cleaning the muck off of the disc? Could I use a MD case that was unaffected by the flood waters and wipe off the discs. I just want to play them once so I can transfer them to FLAC files. Thanks! --