Starts out as ordinary rock salt and is treated with an EPA Design for the Environment Award Winning liquid; an agricultural by-product of the distilling processes blended with Magnesium Chloride. When this environmentally friendly liquid which has more positive health and environmental characteristics than conventional de-icers bonds with rock salt, the corrosive nature of rock salt is neutralized - making Magic Salt safer for machinery, concrete, pavement, people, pets and plants. 49 bags per pallet.