Homemade carpet cleaner for machines: In 2-Gallon Pitcher, mix 1 gallon of warm water with 1/4 cup of distilled white vinegar and 1/4 cup of bleach-free liquid dish soap. Optionally you can add a few drops of essential oils to give carpet fresh scent. Pour mixture into the cleaning solution reservoir of your carpet cleaning machine. Be sure to pre-treat any stains. Clean carpets as normal.