Another form of Colon Cleanse which could be more permanent may be the use of good colonizing probiotics. Bifidumbacterium would be a good start especially the colonizing strains.
What these bacterium can do is that they are able to attach themselves to your intestinal walls. In the process they prise loose the old material n debris and more importantly prevent others from sticking to the walls in future. In addition, bifidumbacterium is very effective in killing pathogenic and harmful bacterium.