DampRid Moisture Absorber (Pack of 4).

Think of DampRid as a dehumidifier that doesn’t need electricity. It’s the convenient, all-natural way to absorb excess moisture in the air that can cause stale, musty odors, while preventing damage to your valuable possessions. DampRid’s crystals absorb excess moisture in the air to create and maintain the optimal humidity level in your home, storage areas, cabin, boat, car, RV or wherever moisture is a problem.