Living in a house with Swamp Coolers (Evaporative Coolers) moisture and rust can be an issue even in a dry climate. I have tried loose bags of desiccant but this new product seems like a better more easy to use option. I use these in a gun safe, but they would be effective in any enclosed area with valuables in a home with swamp coolers or a humid environment. These can be used in gun safes, as well as for optical equipment, important documents, photographs, film stock or just to keep towels dry in the closet
These come in a simple plastic wrapper that is easy to open
There's not much to know, mostly the package suggests more uses for these clever little dryers
It comes in a plastic seal, but mine was wet already according tot he color indicator window, so I used the built in plug to dry (warm) the unit and desiccant inside
It took a few hours plugged in the wall for the color indicator to register the desiccant crystals being dry
It then went into the safe to pull moisture from the air and prevent rust
Special Note; Clean and oil your the guns in the back of your safe every few months