Whether it's in the driveway or the yard, sometimes grass is unwanted and needs to be killed. Several chemicals will do the job, such as pre-emergent and post-emergent herbicides, but these chemicals are expensive are not good for the environment. Also, grassy weeds that exist as part of the yard require nonselective herbicides, says the University of Minnesota, which can damage desirable plants in the area and may take a long time to disappear from the soil, making it difficult to replant.
Pour undiluted white vinegar over the area of grass that you wish to kill, says gardeningknowhow.com. Spray large areas using a pressurized garden sprayer during the heat of the day for best effect. This will kill grass in a few days.
Cover large areas of grass with newspaper to keep the grass from getting sunlight. Place 8 to 10 sheets on top of each other, overlapping in different directions for the best coverage. Place mulch over the newspapers to keep them from blowing away and to increase the heat. The grass will die in a few weeks.
Remove the newspaper once the grass is dead, and cover the area again with the mulch to prevent further weeds and grass from growing, recommends the Iowa Department of Natural Resources.
Hand-pull small weeds that pop up through the mulch.