Starbrite - No Damp Dehumidifier & Moisture Absorber Refill - 12 oz. - 85400 No Damp Dehumidifier is the 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 - 12 oz. Refills all No Damp Dehumidifiers. Add right on top of remaining chemical. Very economical to use.