This is theoretically correct but experience shows otherwise. It is not easily determined whether a colon is clean or not. Cleansing the colon before the liver flush doesn't necessarily imply it is clean enough to pass out all the stones. Besides, the stones can be extremely toxic and, therefore, irritating to the colon which susequently may contract itself at certain places and become spastic. Such a situation is hard to foresee. I discovered long ago that even people whose colons were pretty cleaned out before their liver flush still passed stones during the colonic afterwards. Like the saying "better safe than sorry," I would not risk omitting this important part of the cleanse. I am aware that this adds considerable expense to the liver cleanse but it prevents potential harm to the organs and endocrine system.