Many people spend countless hours in their yards to ensure their grass is lush, green and healthy. While healthy grass is typically a good thing, it can become a nuisance if it begins to grow in places other than the lawn, such as in the cracks of a driveway or in a garden. Pulling the grass out can provide a temporary solution, but it takes a little more work to permanently kill unwanted grass.
Fill a clean, empty spray bottle with vinegar. A normal 5 percent white vinegar is all that is necessary.
Spray the unwanted grass until the blades are completely covered in a layer of vinegar. The acid in the vinegar will kill the grass and any other weeds it comes in contact with.
Repeat the process one week later if the grass did not die with the first application or if new grass starts to grow.