I have been on the senekot for 15mths now. I feel like I am having some dependence on it so I asked the CRS and he said the benefit outweighed the risk. Not sure I like that idea but I tried miralax before and didn't feel it worked as well. Maybe time to try again seeing as nothing is working very well anymore anyway.
Tried benefiber as well in the past but it gave me bad abdominal cramping. I was told I probably have a sensitivity to the kind of fiber used in it.