EcoTraction ET9RB All-Natural Volcanic Mineral Ice Traction Granules, 20-Pound Prevent winter slips & falls with all natural non-corrosive volcanic mineral Effective traction granules grip into ice & snow and one cup covers over 144 square feet (parking space) Safe for pets and lawns; it actually benefits the soil and the environment Non-corrosive for concrete, interlocking stones, bricks, wooden deck or metal Works in all temperatures, even past -58F unlike salts and ice melters