High-performance ice melt. Performs to -22 degrees Fahrenheit. More effective than rock salt or calcium chloride. Apply 40% less ice melter. Melts black ice and hard packed snow. Environmentally friendlier; safe for plants, people and pets. Designated by the EPA (Environmental Protection Agency) as "Design for the Environment". Provides corrosion protection; 80% less corrosive than rock salt. Less harmful to walkway and driveway surfaces. Will not clump or cake. Biodegradable and water soluble.