So I tried this product, and it seems to work. Today I was going through the safe and there was water standing on the top shelf. Upon further examination, the plastic container had cracked and the trapped water leaked out and all over the shelf

. Upon further and closer reading of the instructions it says "The manufacturer is not responsible for damage due to spills or leaks"... Hmmm...how about using a good container to start.. Oh well, my mistake for not reading into that although who would have thought that would have happened? Maybe if it were damaged, but it appears that in the chemical absorbing water, it swelled and cracked the container thus causing the leak. I have now placed the chemical in "redundant containment" and put it back in the safe. Just a heads up if anyone is using this stuff, I believe that it works, but check your containers...
Here is an image of the product:
