I found the best Colon Cleanse is a few professional colonics -- especially (maybe only) if you find a real good colon therapist. Some will just put the hose up your bum. The good ones know about massage and what to do between colonics -- should YOU use fibre or probiotics or herbs or what.
And you can ask the therapist questions, too. So when you're on your own you're more familiar with the whats and hows of a cleanse.
A colonic doesn't take long - think massage session. That's about it. You can do it after work or the weekend. It should not interfere with your life at all. There is no running to the toilet like when you take heavy movers orally.