Looking for a colon cleanser

It's been a while that my father told me that someone recommended him to use a colon cleanser product.He asked me if it's really good to the body.I told him that colon cleanser usually do the cleansing and detoxification.So what I did,I searched on the net and show him some of the colon cleanser products such as dr. natura colonix,cleansonix,colonetix and some other products.I told him that we have to read first the reviews of the consumers before buying any products.We have to be sure that it's safe and effective to use.

Now that my father is almost 60,I think he will need this kind of supplement since colon cancer strikes on people 50 above.