DampRid Refillable Moisture Absorber prevents musty odors and reduces excess moisture that causes mold and mildew stains. It turns stagnant air into fresher healthier air. DampRid's Refillable product features a sturdy container and insert sleeve that can be refilled and reused time and again. It is an easy to use and environmentally friendly. The 10.5 oz container is ideal for space that is 150 to 250 sq. ft. in size and lasts up to 45 days.