Ortho® GroundClear® Weed & Grass Killer2 32 oz conc.Ortho Groundclear Weed & Grass Killer2 32 oz. Kill weeds and grasses with Ortho GroundClear Weed & Grass Killer2 Mix with water and then apply with a tank sprayer (see label for instructions) Use directly on weeds on patios and in landscape beds Starts working immediately see results in 15 minutes Apply at any time of the year when weeds are small (3 inches tall or wide) and actively growing Ortho GroundClear Weed & Grass Killer2 works fast to kill