- Lilly Miller MOSS OUT! Lawn Granules kill lawn moss quickly. See results in hours. Contains 10% iron to kill lawn moss and turn lawns a deep green. Because no fertilizer is added, you get the moss control and greening without excessive growth that requires frequent mowing. Active ingredient: 32% Ferrous Sulfate Monohydrate. 20 lbs. covers 5,000 sq. ft.
