here

go to www.curezone.com and on the left hand column you will find all the cleanses categories.
here is the bowel for starters.

//www.curezone.org/cleanse/bowel/default.asp

long read, lots of different recepies, but most basic is the Bentonite and psyllium shakes often addressed as b&p or p&b. just keep reading and you will see this site is easy to use and all the info and more is on here. try doing a search too!