DampRid Hi-Capacity Moisture Absorber Buckets eliminate excess moisture from the air that can cause stale, musty odors. With the power of Microban technology, it also inhibits the growth of mold and mildew. The hi-capacity design is perfect for large spaces - making it an ideal garage and basement odor eliminator. It's also great for crawl spaces, storage areas and stored RVs & boats. DampRid crystals absorb excess moisture to create and maintain the optimal humidity level wherever moisture is a problem. Duration depends on temperature and humidity. When the liquid in the bucket reaches the replacement indicator line, simply discard and replace. Keep out of reach of children. Do not use in moving vehicles. Do not allow product to contact leather or metal. ( Inhibits surface damaging mold and mildew growth, Compared to other DampRid Hi-Capacity Bucket).