With 18.6% Ferrous Sulphate, Liquid Moss Control quickly controls moss in your lawn while turning the grass a rich,deep green color! Simply attach to your hose and spray where requried. Allow for two dry days of weather following the application for best results. When moss turns dark brown/black, remove with a thatching blade or rake, top-dress with Nurseryland Power Top Soil and overseed with Overseeder. Maintain a high pH with bi-annual applications of Dolo-Pril in wetter regions to prevent moss returning to your lawn.