From the Manufacturer Blue Heat BH20 Snow & Ice Melter with Heat producing pellets – 20 pound bag is a powerful ice melter to melt, that is up to 25 degrees below zero. Blue Heat has superior strength and is to de-ice sidewalks, driveways and other road surfaces designed in minutes. There is also a non-patented color blue color to distinguish between the areas with the user that can be applied and unused.