For years, i have been saving all the dry silica packs that come inside of boxes of stuff i purchase, to throw in my Gun Safe and Ammo Boxes. I was speaking with a guy at the gun range about this, and he said he buys silica at Ace hardware, but it is not cheap. So, i started doing some googling, and found this video on how to make your own dessicant bags on the cheap. Anyone ever try this before? I'm headed to walley world today, to see if they sell 100% silica cat liter, and give it a shot if they do, (pun intended).