Open Box Clearance Snow Ice Melting Mat, " ...
Once the mat heats up, it will melt snow and ice, creating a brine that is then wicked around the mat. The mat then dries up and gets ready for its next round of winter precipitation. There are two ways you can use a Saltnets® mat: you can either lay it down before winter precipitation occurs or you can wait and place it on top of previously fallen snow or ice.
