Active Ingredient: 83.7% S-MetolachlorPreemergence herbicide that offers long-lasting residual control of yellow nutsedge and tough annual grass and broadleaf weeds in ornamental beds. MAGNUM technology provides superior control of labeled weeds at a 33% reduction in use rate. Can be tank mixed with other herbicides like Glyphosate. Effective substitute for Surflan.Rate: 1.3 to 2.6 pints per acre or 14 to 28 ml. per 1,000 sq. ft.