There are several ways to cleanse our colon. Some would fast once a week in order to detoxify their colon. They will give the colon a chance to flush away toxins outside the body. Without adding food for your internal digestive system will somehow give it a full time to used up the ingested food. Some will take a food supplement that will help cleanse their colon. There are people who will opt to use herbal colon cleansing products.