Designed with an improved environmentally friendly formula, not harmful to people, pets, or vegetation when used as directed, but has a melting power that outperforms simple blends. Melts ice down to -10 degrees Fahrenheit/-23 degrees Celsius. Safer when used as directed on air-entrained, cold-weather concrete that is at least 1 year old. Contains Sodium Chloride, Magnesium Chloride, Potassium Chloride, Urea, and MG 104. Helps prevent refreezing up to 2-1/2 times longer than other ice melters.