Are you determined to kill pesky weeds and grasses, but worried about harming nearby plants? Roundup Precision Gel® Weed & Grass Killer attacks weeds, root and all. Plus, this innovative gel easily gets into hard-to-reach areas to kill only what it touches. You'll start seeing results in just hours - precisely where you choose to treat. Weeds begin to yellow and wilt within 6 hours. Use anywhere from flower beds and vegetable gardens, to driveways and fence lines and say goodbye to weeds.