Concrobium Moisture Grabbers are a desiccant product designed to protect surfaces and possessions against: moisture damage, musty odors, and rust & corrosion. The unique water-attracting and storage technology is engineered to capture and reduce moisture in small, confined areas. Recommended For: A single Concrobium Moisture Grabbers pouch is effective for spaces up to 350 cubic feet. This product is ideal for use in small, confined spaces including: closets, bathrooms, cabinets, pantries, storage bins, safes, cars, trucks.