Colonic irrigation involves the introduction of purified warm water, which flows slowly into the colon, under low pressure, via a small tube. When the colon is filled the water flows out through a larger tube, bringing with it any loose debris. This is done a number of times during a treatment, the result is a gentle flushing of the colon and loosening of old fecal debris. The treatment is not painful or uncomfortable.

It was first recorded around 1500BC in Egypt,on Ebers Papyrus. Colonic irrigation is more effective than enemas, as the whole colon gets treated.