Deicers for Walkways & Roads

Slick steps, sidewalks and roads can be hazardous to your wintertime health. Removing compacted snow and ice with a shovel or blade is not always an easy task. That's where chemical deicing agents can come in handy. Sprinkled over snow or ice, deicers melt down through to the hard surface and "undercut" or loosen the snow and ice by lowering the freezing point of water.

Deiciers are available in pellets, flakes, irregularly-shaped particles, and liquid. Research shows that uniformly-shaped, spherical pellets of 1/16" to 3/16" diameter penetrate ice faster than other shapes.

There are five chemicals commonly used as deicers. They may be used alone or combined with other materials to enhance their performance.

Pelleted fertilizers containing ammonium nitrate or ammonium sulfate are sometimes also used for melting snow and ice. Be aware that these tend to damage concrete more than sodium chloride or calcium chloride do. Improper use of any chemical deicer may cause plant injury, which appears as drying, stunting, dieback, or "burning" of the foliage.

For locations where chemical deicers aren't appropriate, sand or cat litter can provide some traction but will not melt snow and ice.


Webpage maintained by:
Bob Schultheis
Natural Resource Engineering Specialist
Email comments to: schultheisr@missouri.edu
Last revised: 07/15/2011

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