Winter Grass KillerWinter Grass Killer is a selective herbicide designed to control winter grass on lawns such as couch, bent, buffalo, ryegrass, brown top, and Kentucky Blue Grass. It is not recommended for use on Kikuyu or fescue lawns. This product breaks down rapidly, leaving no soil residue, and is cost effectivejust 15 mL treats 100 square metres of lawn. For best results, apply as a fine spray as soon as winter grass appears, before it flowers and produces seed.