As the famous saying goes, rust and politicians are the enemy of firearms. For the former, keeping the humidity levels in your gun safe guards against corrosion, and the Hornady Rechargeable Dehumidifier provides a compact, re-usable climate-control solution for your guns. Each Hornady Rechargeable Dehumidifier is loaded with moisture-control crystals that change color when they've captured their fill of moisture. The unit ships with a quick-connect bracket that mounts easily inside of any gun safe, and the unit can be recharged by plugging into any standard 110V outlet. A single Rechargeable Dehumidifier will control moisture in an area up to 333 cubic feet, and the device uses no chemicals that are dangerous to kids or pets.