Rock salt works best in the high 20s, low 30s.
When Pre Salting a parking Lot with Rock Salt prior to a storm, it can create a huge mess both in the parking lots, inside office buildings, and inside stores. It can also be carried out onto roadways by other cars so you as a customer are losing out. With Liquid De-Icer you get faster results with little residue left on paved surfaces.
Using liquids as an anti-ice agent leaves a lot cleaner property
Also, there is less potential damage to plant material, concrete and building floors.
Liquid De-Icer helps to keep a bond from forming between snow or ice and the pavement surface.