Magnesium/Potassium/Sodium blend. Fast acting Zero Ice quickly breaks the molecular bonds that create ice, reducing it to water. Keeps on working for hours, even at temperatures below 0° Fahrenheit. Safe to handle. Safe on carpets and floors. Willnot leave white, filmy residue. Safer around grass and shrubs. Will not dry out plant life. Safe on shoes and leather goods. CAUTION - Do not use on fresh concrete, porous concrete or patio block. For best results on concrete surfaces, brush or sweep awaypuddles after melting has occurred.