If you have never used a colon cleanse system, you might be surprised to find out that it isn't a simple, short-term procedure. To do a thorough cleansing, you need to get a kit that has fiber to remove waste, a detoxifying agent, an anti-parasitic and probiotics that will restore the natural flora in your digestive tract once the cleansing is completed. Although some of these systems are only recommended for use over a few days, most require a month or more before they do the job.