Using the Ware Chill Stone is super easy. First, soak the underside of the stone. Then, put it in the refrigerator for 4 hours. Remember, do not freeze it. Once it's cooled, place it in your critter's home. This will help keep your critter cool. The stone is made of dolomite, so it's chew - proof. For maintenance, just clean it occasionally with a damp cloth. Always check the stone for any signs of damage. If you notice anything wrong, replace it right away. And always follow the soaking and refrigerating instructions to ensure it works well.