Prestone, 9.5 LB, Driveway Heat, Calcium Chloride Ice Melt Pellet, Concentrated, Premium Grade, Hygroscopic Formula Draws Moisture From Snow & Ice Allowing For An Efficient & Fast Melting Process, Melts Down To -25 Degrees Fahrenheit, Melts Faster Than Blended De-Icers Or Rock Salt, Safe For Vegetation & Concrete When Used As Directed, No Powdery White Residue, Shaker/Jug.