If you're using potter's clay or Critter Clay, you'll often find that they have begun to harden and are no longer pliable. Instead of throwing it out and getting new clay or trying to wet it topically, here's a great way to restore it to it's original consistency. You need: A cheap cheese grater that you can find in the Dollar Store or WalMart A spray bottle with a "mist" adjustment" Fill your spray bottle with warm to hot water. A few drops of Fabric Softener will help. Fabric Softener is a surfactant and makes the water "wetter" and more easily absorbed by the dry clay. Take your clay and start grating it. When you get enough to cover the storage back bottom you're putting it in, mist it with several spritzes of the hot water mix. Then repeat that step until you have your clay all grated and wet. Seal the bag and let it set overnight. The next day, you'll find your clay is completely rehydrated and you can reform it it you'd like. When using the clay, use what you need and then spritz several pumps of water into the bag before closing it. You may not need to do this every time, but the open bag allows moisture to evaporate. Routine moistening will prevent you having to start all over again.