What do you sprinkle on the icy sidewalk?
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There is no golden mean. NaCl mainly damages plants by causing changes in osmotic pressure, which prevents them from "drinking" such water. Sand can be used, but it only works up to -5 degrees. Although we don't have much severe frost here, I suggest using MgCl2. It has many advantages. Despite containing chlorides harmful to plants, it is balanced by the Mg ion, which has a very beneficial effect on plants. Other advantages include: it works up to -20 degrees, it can be mixed with water to pour over ice (of course, if you pour too much and it drips off, it won't work), it can be mixed with sand or CaCl2. CaCl2 is equally effective. NaCl harms the paws of animals if they are "damaged" or cracked. But their owners should take care of that. Besides, animals are very cautious about where they walk - that's why they prefer lawns over sidewalks.
There is no golden mean. NaCl mainly damages plants by causing changes in osmotic pressure, which prevents them from "drinking" such water. Sand can be used, but it only works up to -5 degrees. Although we don't have much severe frost here, I suggest using MgCl2. It has many advantages. Despite containing chlorides harmful to plants, it is balanced by the Mg ion, which has a very beneficial effect on plants. Other advantages include: it works up to -20 degrees, it can be mixed with water to pour over ice (of course, if you pour too much and it drips off, it won't work), it can be mixed with sand or CaCl2. CaCl2 is equally effective. NaCl harms the paws of animals if they are "damaged" or cracked. But their owners should take care of that. Besides, animals are very cautious about where they walk - that's why they prefer lawns over sidewalks.
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