Green up your lawn while cutting down on maintenance. Our precise blend of iron, sulfur and gypsum work with the soil to build lush lawns without the excessive growth associated with nitrogen fertilizer. It’s a non-burning, non-staining formula, too. So spills or over application won’t kill grass, tarnish sidewalks or discolor driveways. Encap Fast Acting Iron is the stain-free, stress-free way to a hardier, greener lawn.