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Ice Melt Products, Pets, and Kids

Crystals and granules intended to melt ice and snow keep walkways safe. But, like many useful chemicals, they can cause problems if they are misused.

Ice-melting chemicals commonly contain sodium chloride or rock salt, calcium chloride, potassium chloride, magnesium chloride, and/or urea, also known as carbonyl diamide. (Products intended to provide traction, instead of melting ice or snow, include sand, gravel, kitty litter, and wood ash.) These ice-melting chemicals lower the freezing point of water. Applying them on top of a layer of ice or snow results in slush. The slush then can be shoveled or pushed off the walkway.

Sodium chloride, the same thing as table salt, and calcium chloride are the products most often used by homeowners. The amount to use depends on the type of chemical. Labels will tell you how much product to use per foot or yard of surface. More is not better! Recommended amounts will produce the maximum effect with the minimum amount of damage to plants, concrete, cement, soil, and water.

The poison center gets many calls about children who put ice melting crystals into their mouths. Usually, this does not cause problems. BUT, some of these chemicals can cause irritation; a child may develop a rash, redness inside the mouth, or drooling. If a child swallows a piece of rock salt or another ice melting crystal, wipe out the child’s mouth, give a small glass of milk or water, and wash the child’s hands and face. Call the poison center at 1-800-222-1222.

Pets can develop dryness and irritation on their paws and skin if they walk through ice melting chemicals. Wipe all of the product off their paws and fur as soon as they come inside. Then, wash carefully to remove any residue. Pets can develop mouth irritation if they eat the chemicals or the resulting melt-water. They may even swallow enough sodium or calcium to poison themselves. If a pet develops drooling, vomiting, seizures, or other symptoms, call the veterinarian right away.

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