The DampRid 7.5 lb. Moisture Absorber Refillable Jug is a fragrance-free solution to prevent mold and mildew in areas with low ventilation or that are closed up for the winter, such as second homes, basements, boats, RVs, and storage units. This large refillable jug only needs to be refilled twice a year, making it a convenient and long-lasting option. The Tyvek sealed into the lid provides safety and spill resistance. This refill container is designed to replenish the Mega Refillable Moisture Absorber and works by attracting and trapping excess moisture to maintain optimal humidity levels. When the Mega Refillable Moisture Absorber has filled with water and the crystals have dissolved, simply pour the water down the toilet (septic safe) and replenish with this convenient resealable refill. Keep out of reach of children. Read and follow all label directions. Use with model # FG280.