The lone voice of horticultural reason
Don’t use salt or other forms of de-icers on stone patios and walkways.
Sorry, you’re taking the easy way out—and down the road, you’ll pay the price. If you are fortunate enough to have outdoor stone surfaces, shoveling the snow (plastic shovels preferred) is the only aesthetic and safety maintenance required. Scattering salt-based products on an icy patch of stone walkway will only lead to increased flaking and deterioration of the stone surface, while other forms of chemical ice-removers can permanently stain the stone.
When it snows, shovel your stone walks. One thing we get in the north is plenty of sunny days, all winter long. A little bit of ice or snow here and there should melt and completely evaporate in as little as one sunny day, regardless of outside temperature.
The Renegade Gardener