Post-infancy use of inert rectal stimulators

It's cropped up as a topic on a number of health websites - use of something other than an enema or suppository as a kalilya (or, as we say, a "duiya"). I'm skeptical as to whether, post-infancy, any non-medicinal treatment other than "mechanical rectal evacuation" can actually work*. Butt then what do I know?

* = (I didn't include Windi-type devices in the list, for that reason).