By pushing warmer water up, Kasco’s De-icers create an opening at the water’s surface, keeping boats and docks safe from damaging ice buildup. Kasco’s De-icers create more thrust than any other product on the market. More thrust means more open water to better protect your property. Not only do De-icers protect your in-water property, they also help keep fish and aquatic species healthy throughout the winter by allowing for open areas where oxygen can enter the water.