Use Ortho? GroundClear? super weed and grass killer to kill over 175 different weed and grass types including crabgrass, dandelion, nutsedge and oxalis. The quick kill, dual-action formula starts working immediately as one ingredient kills on contact while the other penetrates deep into the plant to kill all the way down to the roots. Sprayed weeds usually begin to wilt within hours after being treated, with weeds completely killed in one to two weeks. Apply this ready-to-use weed and grass killer in landscape areas, patios, walkways, gravel, mulched areas, along houses and fence lines and on driveways when weeds are actively growing and the air is calm. It's easy-to-use, simply turn the sprayer nozzle to the desired setting and squeeze the trigger repeatedly. Rainfall or watering 15 min after application will not reduce the effectiveness of this powerful weed control. A single application of Ortho? GroundClear? super weed and grass killer will start to control even the toughest weeds and grass right down to the roots.