Quickly and easily kill unwanted weeds and grass with Wilson Total Wipeout Ultra Grass and Weed Control. This grass and weed killer absorbs rapidly, delivering visible results within 24 hours. The formula is designed to work in ultra cool temperatures as low as 15 degrees Celsius (59 degrees Fahrenheit). It's gentle on the environment, leaving no harmful residues in the soil. This herbicide is ideal for use on patios, driveways, along fences, on sidewalks and more.