Morton Ice Melter Safe-T Rock Salt 25 lb (3 pack). Morton Safe-T-Salt is an economical way to help remove ice and snow. It can also provide traction when applied under the wheels of a vehicle stuck in snow or ice. It's what you expect from Morton - a brand you trust. When winter weather makes your outdoor walkways and driveways slick, get Morton Safe-T-Salt, Rock Salt Ice Melt, the budget-friendly way to get a grip on icy conditions. Rock salt offers added traction to your steps, sidewalks and driveway, helping ensure that you stay safe and your car doesn't get stuck. Melting ice and snow at temperatures as low as 5°F, Morton Safe-T-Salt helps keep your home free from slippery situations, even in frigid temperatures.