During winter weather conditions rock salt is a common product used to help keep driveways and sidewalks clear of ice. However, excessive use can cause damage to your lawn. To help reduce the possibility of damaging the turf make sure to use rock salt sparingly and only apply it at the suggested rate listed on the bag. Another option would be to use a landscape-friendly deicing agent. Consult with your local garden center in regards to a specific product as there are many to choose from. Be safe & stay warm.