Starbrite - No Damp Dehumidifier - 48 oz. - 85450 No Damp Dehumidifier is an effortless way to help control the excessive humidity that leads to musty odors, stains, or corrosion aboard stored boats, RVs, or seasonal homes. The special crystals automatically remove moisture from the air, depositing it safely in the convenient container. Great for cabins, heads, closets, and other enclosed spaces. Features: Size - 48 oz. Refills all No Damp Dehumidifiers. Add right on top of the remaining chemical. Very economical to use.