Due to the publicity surrounding the popular weed killers on the market, we offer this safe and effective alternative. In a bucket, mix a gallon of white vinegar, a cup of salt, and a tablespoon of diswashing liquid. Make sure the salt dissolves. Transfer to a garden sprayer and spray on weeds. Be careful not to spray anything you don't want to kill because this formula is non-selective. You should see results in a couple of days.