# Preserve and Protect: SnapSafe Canister Dehumidifier - Shield Your Valuables from Rust and Corrosion with Easy Recharge! Protect your valuables against rust and corrosion by utilizing this SnapSafe Canister Dehumidifier. When the cap indicator turns pink from moisture the canister is ready to be recharged. To recharge: place unit in the oven at 325 degrees F for two hours. Unlimited recharges allows for a lifetime of use.