faiello5--
I hope you haven't already ordered from one of the previously posted sources...the best price by far is from Galati International, 800-444-2550, and request a catalog. No web presence at all, apparently, not even E-mail.You probably can describe the product over the phone and order without waiting for the catalog. The stuff comes in a porous fabric bag/pouch of approx. 1.5 lb. for only about $4.00, with discounts for quantity (don't have the catalog in front of me for more precise #'s).
These are big enough to do some good; I keep several in my camera safe (cameras and lenses are even more sensitive to humidity than are guns, as well as being more difficult to protect--can't slather a Nikon with CLP and RIG!! I don't mess with the little "sugar packets" or tins of the stuff except to use in an individual gun cases.
I believe they sell it under the brand name "Humi-sorb". Hope this helps!
This is my first time posting anything to TFL. Gawd, I love this place!!