When the first ice storm of the season rolls through St. Louis, most facility managers aren’t thinking about which chemical is going down on the parking lot. They just want the lot and walkways safe before the first shift arrives. But the ice melt used on your property affects more than traction. It plays a part in how your concrete holds up, how your landscaping looks in spring, and how much product it takes to get through a storm. Here’s how the most common options compare, and what to consider before this winter’s first event.
Why the Type of Ice Melt Matters
Every ice melt works the same basic way: it lowers the freezing point of water so ice turns into brine and releases from the pavement. Where products differ is how cold it can get before they stop working, how fast they act, and what they do to the surfaces and plantings around them. On a commercial site, where sidewalks, entrances, loading docks, and landscaped islands all share the same footprint, those differences add up quickly.
Rock Salt (Sodium Chloride)
Rock salt is the most common ice melt on the market and usually the least expensive. According to Iowa State University Extension, it’s the most frequently used deicing compound, but it loses effectiveness as temperatures drop, it’s highly corrosive, and it can damage nearby plants. The upside is that on dense, properly cured concrete, the Pennsylvania Aggregates and Concrete Association considers sodium chloride an acceptable choice. For most St. Louis winters, rock salt is still the workhorse. The question is how much of it you need and where it ends up.
Calcium Chloride Ice Melt
Calcium chloride ice melt works at colder temperatures than rock salt and acts faster, which makes it popular at building entrances and walkways where traffic can’t wait. The tradeoff is concrete. A study published by the Iowa Department of Transportation on concentrated deicing solutions found that calcium chloride and magnesium chloride chemically attack hardened cement paste, while the same effects were not seen with sodium chloride. That doesn’t mean calcium chloride is off the table. It means it should be used deliberately, in the spots where speed and cold-weather performance matter most, rather than broadcast across every surface.
Magnesium Chloride Ice Melt
Magnesium chloride also performs well in cold weather and is often marketed as a gentler option. It still carries the concrete concerns above, and the Pennsylvania Aggregates and Concrete Association lists deicers containing magnesium chloride among the products shown to cause higher rates of concrete deterioration. Like calcium chloride, it has a place on commercial properties, but it shouldn’t be treated as an automatic upgrade over salt.
Other Options: CMA and Ammonium-Based Products
Calcium magnesium acetate (CMA) is a salt-free deicer. Iowa State University Extension notes that it causes little or no damage to landscape plants and is less corrosive than deicing salts. It typically costs more than salt, so it tends to be reserved for sensitive areas rather than entire parking lots.
On the other end of the spectrum, keep any product containing ammonium sulfate or ammonium nitrate off your concrete. The Pennsylvania Aggregates and Concrete Association warns that these chemicals are aggressive enough to destroy a concrete surface.
Protecting the Concrete on Your Property
Sidewalks, curbs, and entry plazas are expensive to replace, and deicer damage usually shows up as scaling and flaking in the spring. A few habits go a long way:
- Go easy on new concrete. The Pennsylvania Aggregates and Concrete Association recommends keeping deicers off concrete during its first year. If you poured new walks or curbs this year, let your snow contractor know.
- Consider a sealer. Water repellent sealers made specifically for concrete add another layer of protection against chloride-laden moisture.
- Clear first, then treat. Removing as much snow and ice as possible before applying product means less ice melt is needed to finish the job.
- Don’t overapply. More product doesn’t mean more safety. The Minnesota Pollution Control Agency built its Smart Salting program around the idea that excess salt ends up in soil and waterways without making surfaces any safer.
Protecting Your Landscaping
Ice melt doesn’t stay where it lands. Plows, runoff, and foot traffic carry it into turf and planting beds. University of Missouri Extension warns that too much salt can leave dead strips along sidewalks and driveways and can kill shrubs and flowers. On commercial properties, that damage usually shows up in spring along entrance walks, parking lot islands, and the beds where snow gets piled.
To limit it, push snow piles away from beds and turf whenever the site allows, use lower-impact products near sensitive plantings, and choose salt-tolerant plants when you renovate beds that take the brunt of winter. Coordinating your snow and landscape crews helps too, since the same team that plows your lot can plan where the snow goes.
Why Pre-Wetted Salt Is Worth Asking About
Pre-wetting means coating rock salt with a liquid before it’s spread. Research summarized by the Washington State Transportation Center (TRAC) found that pre-wetted material stays on the surface longer, bounces and scatters less, and turns into brine faster than dry salt.
That’s the idea behind Ice B’Gone Magic, the high-performance ice melt Bluegrass uses on customer properties. It’s rock salt pre-wetted with Liquid Ice B’Gone, so it works longer and at lower temperatures than conventional ice melt. That lets crews reduce application rates while cutting down on the winter damage to hardscapes, landscaping, and equipment that comes with heavier salting. Bluegrass also supplies treated salt to local contractors, municipalities, and property managers who handle some of their own deicing.
Matching Ice Melt to Your Property
The right approach depends on how your site is used:
- Medical facilities: Entrances, drop-off areas, and walkways need to be clear around the clock, so fast-acting treatment at doors and patient paths matters most.
- Senior living communities: Residents and visitors are especially vulnerable to falls, which puts the focus on walkways, entries, and consistent re-treatment through a storm.
- Industrial properties: Large lots, truck routes, and loading docks call for efficient bulk application and a plan that keeps product off sensitive concrete and away from drainage areas.
- Office buildings: Morning arrival is the pressure point, along with entry plazas and landscaped areas that shape first impressions.
- Banks: Drive-thru lanes, ATM areas, and short walks from parking to the door all need attention early in the day.
Leave the Ice Management to Bluegrass
Choosing the right ice melt is one piece of a winter plan. Bluegrass handles commercial snow removal, ice management, and deicing for properties across the St. Louis area, using products and application methods matched to each site. If you’re still putting your plan together, our guide to what should be in your commercial snow removal contract covers the rest, and our snow removal team can walk your property before the first storm hits.
Frequently Asked Questions
What is the best ice melt for commercial concrete?
On dense, properly cured concrete, sodium chloride (rock salt) is generally considered acceptable. Calcium chloride and magnesium chloride work in colder weather but have been shown to chemically attack concrete, so they’re best used selectively. Avoid ammonium-based deicers on concrete entirely.
Is calcium chloride ice melt safe for concrete?
It can be used on concrete, but research has found it reacts with cement paste over time. Use it where its speed and cold-weather performance are needed rather than across every surface, and keep it off new concrete.
How can I keep ice melt from damaging my landscaping?
Pile snow away from beds and turf, avoid overapplying product, use lower-impact deicers near sensitive plantings, and choose salt-tolerant plants for areas that take the most winter exposure.
What is pre-wetted salt?
Pre-wetted salt is rock salt coated with a liquid before it’s spread. It sticks to the pavement better, scatters less, and starts melting faster, which means less product is needed to get the same result.
