Bought this Eva Dry dehumidifier for my safe, and couldn't be happier. Its small enough to put virtually anywhere in the safe that gives me the most room, and it can be recharged if or when it starts to become saturated with moisture. One purchase = years of protection for my pistols, shotguns, etc. Wayfair had a great price on it, shipping was fast - I really could not be happier with my purchase.