How to Test Rock Salt for Safety
- 1). Find an inconspicuous area to test the rock salt. Remove any snow covering the iced surface with a shovel or gloved hands. Place the salt on an small section of the iced surface. Allow a few minutes for the salt to penetrate the ice and begin breaking it up.
- 2). Test the area that has the rock salt applied to it. Step on it or hit it with a shovel to see whether the ice breaks up. Review the surface to see whether the rock salt damaged its appearance. If not, then the salt is safe to use on the entire road or driveway.
- 3). Lightly cover the rest of the road or driveway with the salt. Allow the salt to sit for at least 30 minutes. When the ice has melted, remove the slush with a shovel.