It depends if you want to clean the colon from mouth to colon or just clean the colon.
A proper cleanse should consist of drinking a lot of lemon water (using only real lemons)
Juicing (with veggies). Beets and cabbage are a good to add to carrot and apple.
Shots of apple cider Vinegar
flaxseed (oil only and coldpressed)
Psyllium husk
large doses of vit c and magnesium are also very good and moving the colon
and of course no red meat, protein drinks, processed foods or refined sugars.
A cleanse should not produce diarrhea but should make the bowels move 3-4 times a day with solid waste.
If one is making a bowel movement 3-4 times a day now, there is NO need for a cleanse.