Eva-Dry E-150 Eliminator Pouch uses micro absorbing silica gel technology to remove excess moisture from the air. The silica gel is safe, nontoxic, and is a natural defense against excess moisture. The E-150 Eliminator Pouch helps prevent the growth of mold and mildew, as well as eliminate odors, in any area up to 150 cu. ft. Spill and mess-free eliminator will absorb 4-6 oz. of moisture and lasts up to 45 days. Colored indicator beads change to a dark green when it's time to replace the pouch.