Which Colon Cleanse is Better(and Hidden fees?)?

I am looking at Colon Cleanser options and 2 have caught my attention.
1. Purity 12
2. Nature Cleanse
I am not sure which is better and which is not. I was wondering if anybody knew the answer to which Colon Cleanse is Better.

And are there any hidden fees with the free Trials or scams with any of the 2?(Because anything free is never free)

Thank You!