MustGo Solid Bars, 2 Bars/Pack

Controls and prevents musty odors caused by: mold, mildew, dampness, water damage and humidity.suitable for use in: closets, basements, crawl spaces, attics, sheds, storage containers, moving vaults, storage areas and storage units, during the storage of vehicles, rvs and boats.built-in controlled release technology delivers consistently over time (30-365 days, depending on temperature and air flow). One bars treats 5' x 5' x 8' area (200 cubic feet) of still air.will not damage natural or synthetic materials. Leaves no residue odor.us patent no. 9,596,848.