Ahhh, a fellow cleanser!
You're speaking of "The Master Cleanse". I did it for 3 days before my move and intend on doing a 10 day or longer in the near future.
Here's a couple of important details you left out...
The maple syrup must be the good stuff, not Aunt Jemima or the other sugar syrups that most people eat on their pancakes. You know if it's good stuff when you're paying around $8 or more for a 12 oz bottle. He recommends organic grade B syrup, which is a little less sweet and dark than grade A, but either one works fine. Also, a big part of this cleanse is drinking a quart of warm water with two teaspoons of sea salt, NOT IODIZED like table salt, every morning while on the cleanse and in the evenings if needed. This helps flush the bowels and it works. You don't want to drink it and then go anywhere for the next hour or two or you may be in for a messy surprise if you're caught somewhere without quick access to a toity! :-)
If you Google "the master cleanse" you'll find more info on it and the Doctor who started it. He was actually helping people cure cancer, diabetes and other diseases with it but was stopped because he didn't have a license.