Thoroughly blended, top-shelf ingredients ensure synergistic, fast-acting melting power. Less toxic than baking soda, Pro Series? 960 is safe for people, pets and lawns when used as directed. MG 104? melting catalyst accelerates performance while minimizing the potential for refreeze. Effective down to -10� F. Box. Capacity (Weight): 50 lbs; Quantity: 1 each.