Personally, I believe that if you eat healthy things, and stay fit, your body is designed to do an admirable job of ridding itself of waste materials and toxins. Isn't that what our bowels, liver, and kidneys, etc, are for? In my mind, harsh laxative/colonic treatments are no better than douches and vomiting ....unnatural attempts at "purifying" our bodies. Something vaguely disturbing and self punishing about it. Just my opinion.