Ortho GroundClear Super Weed & Grass Killer Concentrate, 32 oz. is a powerful and effective solution designed to eliminate a wide variety of weeds and grasses, including crabgrass, dandelion, nutsedge, and oxalis. Its quick-kill, dual-action formula works immediately by killing on contact while also penetrating deep into the plant to destroy roots, ensuring thorough and lasting weed control. You will notice sprayed weeds beginning to wilt within hours, with complete eradication typically occurring within one to two weeks. This concentrate is for use around landscape areas, patios, walkways, and driveways, providing a single application that controls most listed weeds. It remains effective even if rainfall or watering occurs 15 minutes after application. Since this product is a concentrate, it must be diluted before use and is applied with an Ortho tank sprayer. Each 32 oz. bottle mixes to create 6.4 gallons of weed and grass killer, covering up to 2,240 square feet.