There are many options for killing grass. Most require expensive chemicals that have only one use and go wasted if not completely used. Bleach, common household chemical, is an effective, inexpensive grass killer and has many other uses in and around the home. With a simple bleach mixture you can easily and kill grass. Use this solution on days when rain is not expected for at least 24 hours; the rain will wash the bleach away.
Funnel two parts bleach and one part water into the tank of a garden sprayer. Re-attach the top of the sprayer to the tank and double check to make sure it is on securely.
Gently shake the tank to mix the bleach-water solution.
Saturate the targeted grass with the bleach-water solution. Avoid spraying areas surrounding areas where other plants could be harmed.
Re-apply the solution after two days to grass areas that need it.