Lay in a supply of abrasives such as sand or kitty litter to sprinkle over icy sidewalks and drives. Try to minimize the use of de-icer salts that can damage plants and soils, pollute waterways with run-off, and corrode concrete and metals. If you feel you must use salts, calcium chloride properly applied causes less plant damage than rock salt. And don't overapply. Mix with an abrasive and start with a small amount as soon as icing begins. Keep adding additional small amounts as needed and you'll get the most melting for the least amount of chemicals.