There's nothing worse than swinging open your gun safe or unzipping a range bag and finding specks of rust on your barrel and action. Don't let yourself get into this situation. Grab a Hornady Dehumidifier Canister and keep your guns and other valuables protected. Each Hornady Dehumidifier Canister is filled with moisture-capturing desiccant crystals, all of which change to a light-pink color once they've gained their fill of moisture from the air. To recharge the canister, no batteries or outlets are required. Simply pop the Dehumidifier Canister into a 300-degree oven for 4 hours, and you're ready to roll again and again, since the canister can be used for a lifetime.