Cleaned many wheels with just a Lysol or Clorox wipe, but not the bleach or peroxide kind. Take that one guys great description of working it like a clit in a porno, but with a wet wipe of some sort. Just keep rubbing it back and forth as you rotate the wheel. It eventually removes gunk off the wheel and frees up gunk inside. Let it dry a bit before plugging it back in. If you have alcohol wipes or just high concentration alcohol, even better than the wipes, but maybe you have one or the other on hand.