Have ice dams developed on your roof? Easily get rid of them with The Best Dam Ice Melter, it is a downspout insulating wrap, that you wrap around the outside of your downspouts with a heat cable, the cable is then run along the ice dam itself. This melts any ice built up in the downspouts giving the ice dam a clear path to melt away from your roof. Leave this on all winter and it will prevent new ice dams from developing.