Bare Ground Bolt BGB-2.5C Fast-Acting CaCl2 Ice Melt Liquid for All Surfaces, 320 oz (2.5 Gallons) Calcium Chloride (CaCl2) formula is Bare Ground's fastest-acting ice melt Safe for all surfaces Works down to -20 degrees No shelf life means you can save whatever you don't use Environmentally safe, water soluble, non-staining and non-toxic to people, plants, pets and livestock