Bare Ground Calcium Chloride pellets, in our 1000 lb Supersak, is a powerful ice melter that generates heat as it melts tough ice and snow. It starts to work quickly and can melt ice and snow at temparatures as low as -67F. Provides a reduction in harmful runoff that can contaminate groundwater, making it safer for people, grass and plants, pets and livestock. Less harmful to to concrete and steel too. Our 1000 lb Supersak is the most economical size for professionals.