Salt can be an interesting thing to look at in its crystalline form. It does a good job of melting snow and ice and thus keeping us safe on the roads and upright on our walks, steps and porches. Salt on the lawns however is not a good thing.
Excess salt will kill the lawn. This means that seeding must be done in the spring to fill the bare patches. (more work!!- always raises my blood pressure!!)
To reduce damage to the lawn- use an ice melting product that does not contain regular salt. Don't use more than is required. In areas where salt damage is prevalent, use gypsum in the fall and spring to help to neutralize the effects of salt. Apply at about 8 lbs per 100 square feet on clay soils. Sandy soils need about half as much.