EXOMELT Calcium Chloride pellets are a heat generating (exo thermic) ice melter that is super fast acting and delivers professional melting power. Works down to -25 degrees F. Easy-application 8-lb. shaker jugs cover up to 500 sq. ft. Melts snow and ice on contact. Less harmful to concrete and steel surfaces than traditional salt products. Leaves no white residue on the pavement when applied correctly.