What is Damp Rid? Think of Damp Rid 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. Indoor air that’s as fresh as the outdoors. Damp Rid products have been providing effective moisture and odor control to homeowners throughout the country for more than 70 years. It’s cost-effective, nontoxic, all-natural and simple to use. And unlike sprays and candles, Damp Rid attracts and traps excess moisture to eliminate musty odors.