From my experience, colon cleanse products are meant to clean out your wallet. I looked up Nature's Miracle Colon cleanse and it has all the keys of a scammy type colon cleanse.
I know someone who had parasites and was told to take something like this and it wasn't working obviously. It actually made the problem worse because she waited. Anyway, she went to the doctor, they found parasites, they gave her real medicine for parasites and she got better.
You can't out-exercise poor eating habits.