I found yet another use for the versitile crystal type kitty litter. I am talking about the type of kitty litter that is made of silica gel. I put a small amount of the crystal litter into a small nylon type baggie and placed it directly into the bag that I keep my rechargeable batteries in. This baggie is kept in the refrigerator at about 4C. Now, when I take the baggie out of the refrigerator to remove some batteries for use, not one drop of moisture forms. This stuff is just an amazing sponge for any type of liquid and is almost free. (If you have a cat at home and you use this type of crystal litter)