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Both rock salt and ice melt are naturally occurring salts. Rock salt is sodium chloride, which is the same as table salt. Ice melt products can be made from a combination of salts like magnesium chloride and calcium chloride or can be those salts alone.

Rock salt comes in large crystals, so it helps provide traction on icy surfaces, whereas ice melt products need to be mixed with sand to provide traction. Ice melt products work at lower temperatures than rock salt, so they might be a better choice if you have a harsh winter climate.

Whether or not an annual snow removal contract is worth it depends mainly on location. If you live in an area with frequent heavy snowfall, a yearly contract could be better than paying per clearing. If you live in an area where it only snows a few times a year, paying per snowstorm may be a better option.

While most people associate defrosting icy roads with salt, you can also use sugar for a similar result. Sugar lowers the freezing point of water, melting ice in a pinch.

However, sugar doesn’t melt ice as well as salt because it doesn’t separate the water molecules as efficiently. So, if you need to quickly melt a stubborn patch of ice on your driveway or walkway, it’s best to use salt over sugar for faster results.

Whether salt melts ice overnight will depend on how low the temperature drops. If temperatures stay around 30 degrees Fahrenheit, you can count on salt melting ice overnight. Otherwise, the lower temperatures get, the less effective the salt is in melting ice, and the more likely you’ll wake up with a slippery driveway the next day.