Prevent falls and injuries this winter by using Keg River's industrial snow and ice melt. Effective to -22ºC. Contains Calcium Chloride – the best Ice Melter ingredient – best combination of speed and duration in ice melting. Polar Plus will not harm vegetation, properly air-entrained concrete or pets when used as directed. Beware of manufacturers who claim complete safety to plants. Any Ice Melter can harm plants with over application.