Have any of you used DRY SPICE? It is small caister of FDA approved silica gel that absorbs moisture. Iput one in a jar of rub that has brown sugar in it and the jar is like the cheese shakers you get in pizza joints. It has been well over a month and no clumping at all. If I remember right a ten pack was $7.95 with free shipping. Ordered it from. www.drypice.com. They claim that each canister is good for upto a year. The canisters are less than an inch long and about half an inch in diameter.
