To kill ants with vinegar, mix equal parts of white or apple cider vinegar and water, and saturate visible ants with the mixture. Spray the vinegar mixture in the affected areas of the home to prevent additional ants from entering.
To eliminate colonies of ants, pour undiluted white or apple cider vinegar directly into the ant mounds on the property, and use a spray made with equal parts vinegar and water inside the home. Spray the affected areas of the home with the vinegar mixture, and spray along baseboards and near entrances to the home to prevent additional ants from entering. Spray the home several times each week until the ants are gone.