First, start saving citrus peels- wash them with baking soda before peeling to make it easier. Save them in the refrigerator until you have a bunch. Next, place in a large glass jar or container with a lid. Cover with white vinegar and soak for 4 weeks- shaking occasionally to mix it up. Finally strain the mixture and reserve the citrus vinegar. Use equal parts water and citrus vinegar for an all purpose cleaner. Use full strength for greasy or stubborn messes.