if you really feel you need a bowel detox - how about a 'deep bowel massage'?
i've never had one, and all the info i've seen on them says there is no 'proof' that they do anything extra-ordinary but they certainly seem to get your bowels moving if you want a good clean out (anyone see that episode of super-sized vs. super skinny?)
it's less invasive than a colonic irrigation which has to be a bonus
(and iirc a colonic doesn't work as well without a massage)
if you feel this is something that would really benefit you - as with every procedure, you really need to read up on it and choose your practitioner carefully