DampRid Drop-in Tab Refill Pack contains four 15.8 oz. moisture absorber tabs. When paired with the Drop-In Starter Kit, they attract and trap excess moisture and eliminate musty odors. Four 15. 8 oz. single-use refill tabs provide optimal convenience with no mess. To use, simply insert an unwrapped tab into the top of the moisture absorbing container. Each tab lasts up to 60 days depending on temperature and humidity. DampRid absorbs moisture without use of electricity or batteries. Blends in with any home decor and can be used discretely in various locations. Place in bathrooms, basements, utility rooms, garages, laundry rooms or a storage locker. Ideal for use as a closet freshener for clothes, this simple home improvement project creates cleaner, fresher air. Available in Fresh Scent and Fragrance Free. Keep out of reach of children. Read & follow all label directions.