Bonide 5121 Concentrate Ground Force Weed Killer, 32-Ounce 32 oz., Concentrate, Ground Force Formula kills all plant life, including roots, and all Sterilizes soil, and prevents new growth for up to 1 full year Excellent choice for driveways, patios, fence lines, gravel paths, parking areas, side walks, and curbs An effective formula, that will be sure to provide results