While municipalities usually plow and ice city roads, sidewalks, parking lots, and concrete steps on private property don't fall within their purview. If you're faced with a treacherous and unavoidable dismount—for instance, a slippery sidewalk where ice has melted and refrozen—a bit of de-icer can make the trip from your car to your destination a little less dangerous. Just keep in mind before you pour that not everyone may appreciate your taking matters into your own hands. Available on Amazon; $20.97.
Related: 8 Easy Ways to Winter-Proof Your Car