I make no warranties and urge you to always proceed with caution in working on any set. If you have tips that others would find useful, please share them with others by filling out the form at the bottom of this page. This removes most of the grime and sometimes leftover adhesive from joker stickers. Old joker stickers and any leftover adhesive can be cleaned up with either alcohol, water, WD-40, or as a last resort, fingernail polish remover. Use nail polish remover with extreme caution, because most paints are soluble in it.
Some people use the non-acetone polish thinner with good results and less threat to the paint.
Leftover fingernail polish, with which some jokers were made, usually has to be removed from Bakelite or other plastic tiles with either nail polish remover or thinner, but tiles may be permanently stained afterward. Chlorine bleach will etch the bone surface and won't get down into the grain anyway. I can't tell you how to clean ivory tiles, because I don't have any, so I haven't tried it. They are so rare and valuable, I'd recommend taking them to a jeweler or restorer with experience in ivory. Cleaning Racks I pretty much clean all racks the same way, whether they are plastic or wood.