Gordon's SedgeStop Nutsedge Weed Killer is a selective weed killer - it targets sedge, kyllinga, and select broadleaf weeds. As a granular weed control, SedgeStop is easy to apply without overspray or drift. Use on listed warm and cool season grasses without damaging them. Season-long control. Apply to wet or dry leaves. One 2 lb. canister covers up to 500 sq. ft. Proprietary active ingredient: Vexis. Please read and follow all label directions.