Table salt is a great temporary deicer, when used in moderation. To prevent a hard frost from forming on your car windshield overnight, try placing table salt in an old sock and rubbing it over the windows the night before, making sure to rub firmly over the entire surface. Use this trick sparingly as repeated use can cause damage to the surfaces you are deicing. You also can use salty liquids like pickle juice as a spray deicer. For large areas and long-term use, you may want to pick up a bag of salt specifically designed for snow and ice removal.
Related: 10 Unexpected Uses for Table Salt