It depends on the circumstances. I may get into the shower or I may hang my butt over the tub or sink.
The basic method is to keep washing it and rinsing it off and then washing off my hand, until I no longer feel poop or anything resembling it on my butt. Be gentle. No soap on the butt, that will dry it out. (As I mentioned in other posts, I don't use soap anywhere besides my hands.)
I then keep washing it, occasionally washing off my hand. When I can rub my butt with my hand it comes back not smelling like poop at all, I consider my butt to be clean.
If you look at animals, they do something similar, though they have to lick it clean. I consider myself very fortunate and blessed to not have to do that. :)
Afterwards, I wash my hands, get dressed, and then wash my hands again.
The basic method is to keep washing it and rinsing it off and then washing off my hand, until I no longer feel poop or anything resembling it on my butt. Be gentle. No soap on the butt, that will dry it out. (As I mentioned in other posts, I don't use soap anywhere besides my hands.)
I then keep washing it, occasionally washing off my hand. When I can rub my butt with my hand it comes back not smelling like poop at all, I consider my butt to be clean.
If you look at animals, they do something similar, though they have to lick it clean. I consider myself very fortunate and blessed to not have to do that. :)
Afterwards, I wash my hands, get dressed, and then wash my hands again.