Choosing the best method for killing weeds and grass growing on a patio or driveway can be tough. However, you can often kill weeds and grass by using common items found in your home. Instead of spending a lot of money on costly weed killers, try using boiling water, vinegar or salt to rid your patio and driveway of weeds and grass.
Pour a kettle of boiling water over the weeds and grass growing on your patio or driveway. Repeat this every day until the weeds shrivel up and die. The more weeds you have, the more water you'll have to boil. With this in mind, consider using a different method if you have lots of weeds and grass growing in your patio or driveway.
Fill a spray bottle with vinegar, and spray it over the weeds and grass growing on your patio or driveway. The vinegar will cause the weeds to dry up and die by drawing the moisture out of them. Repeat this every day until you have killed all the weeds.
Sprinkle salt on top of the weeds and grass. The salt will prevent the weeds and grass from absorbing moisture and this will eventually cause them to die. Be careful not to use too much salt, though, as this could prevent plants and grass from ever growing back in this area.