A premium product designed to tackle the worst winter weather conditions, while still being completely organic and environmentally safe. Works better than traditional icemelters, but carries none of the risks. Effective to -9° F. Begins to work immediately. Use 1/4 - 1/2 cup per square yard. Safe on concrete. Does not chemically affect quality air-entrained concrete or treated wood. It allows for a greater volume of water to evaporate, assisting in the prevention of damage to concrete associated with freeze/thaw cycles.