Is the most environmentally friendly ice melt is a type of de-icer that is made from natural and biodegradable materials, such as calcium magnesium acetate (CMA) or potassium acetate. This type of ice melt is considered environmentally friendly because it does not contain harmful chemicals that can harm plants and animals. Additionally, CMA and potassium acetate are less corrosive than traditional ice melt products, making them safer for use on concrete and metal surfaces.