Powerful and economical. Contains no dangerous chemicals. Contains no magnesium chloride so it will not chemically harm concrete. Effective to -15° C (+5 F). Made up of differently sized granules, allowing the product to begin working effectively immediately, while keeping this blend an economical option for your basic ice melting needs. Can be applied successfully with or without the use of a spreader. Leaves no oily residue behind to track into building. Long lasting action provides instant traction. Potassium Chloride (10-20 percent) blended with Sodium Chloride (80-90 percent).