Road Runner, 10 LB, Premium Ice Melt, Blend Of Calcium and Magnesium Pellet, Potassium and Sodium Chlorides, Melts Down To -15 Degrees Fahrenheit, Starts Melting Process Upon Impact, Safe On Concrete Driveways, Sidewalks and Steps When Applied As Directed, Colorless, Odorless and Does Not Track, Safe On The Environment and Vegetation, Requires Fewer Applications Than Rock Salt, Bag.