Bare Ground spray on Liquid Deicer melts snow and ice faster and at lower temperatures than standard rock salts. Calcium Chloride formula is environmentally safe, biodegradable and water soluble. Can reduce snow accumulations by as much as 2" when applied to pavement before snowfall, and can also be after snowfall to melt ice and snow patches. One gallon can provide coverage that is equivalent to 50 lb of Salt. 2.5 gallons provides up to 2500 square feet of coverage.Calcium Chloride (CaCl2) formula is Bare Ground's fastest-acting ice melt; it is used by snow removal professionals because it is safe on all surfaces including brick pavers. Unlimited shelf life so it is never wasted – good from year to year, just stir it up before use. Effective in cold temperatures down to -20℉, fast acting great for high traffic areas.