Lime will only correct the situation that allowed the moss to take hold but it won’t kill moss that is already well established. Make sure to do a pH test before applying lime so you don’t make the soil too alkaline. Once the pH is correct you can use a moss killer (in spring at this point 10/6) and the rake the dead moss out and apply the appropriate grass seed blend like our Sandy Blend. A strong, thick lawn can keep the moss fro returning as long as you keep the pH at neutral (7.0) and feed the grass a couple times a year.