You can check resources on www.healthyhealing.com, a site by a naturopathic dr. There are a lot of options, and I have loved using this resource repeatedly over the years.
I did some intensive cleansing last year when I had some unexpected skin problems; my experience told me that despite what "Web MD" says about not needing to do colon cleansing, I did need it, and it actually cleared up my skin problems quickly and I felt better than I ever have in my life, digestive-wise. I did some dietary cleansing first, using fresh fruit & vegetable juices every day for 30 days, just in addition to my regular diet (which is pretty healthy, but not perfect). I found that I didn't need to eat as much. The juices gave me lots of energy! Then for the next month I did a series of colonics, one a week for 4 weeks. My colonic therapist encouraged me to eat raw foods/very lightly for 1-3 days prior to the treatment, which really helped to make for a productive session. Having colonics & doing intestinal cleansing helped clear up some chronic low-level health problems I had for years, which was unexpected, and thrilled me. (email me if you want details) Then for another month I used a colon cleanse product, a fiber supplement in the morning, with herbal capsules, and a senna-based tea at night to help w/elimination in the morning. The product is called "colonix" from Dr. Natura. I have never felt better, lighter, and my skin has never looked better. Doing that major cleanse over a year ago has effected a lasting change in my digestive system & overall health--greatly improved.
I would recommend that if you feel you would like to try intestinal cleansing, you just go for it, & you be the judge of whether it works for you. I have done a lot of research on it, and apparently it can be controversial...but results speak for themselves.
Another website to check out is www.wellnessoflife.com, the site from the colonic therapist I used. It gives you a lot of info about your anatomy & why you might even consider doing intestinal cleansing, even if you aren't interested in doing a colonic irrigation.
Hope this helps give you an "alternative" view to the posts you have already received.