Two major, all-day cleanouts a year. Two "Coffee weeks" a year. Both with forms of green fasting.
A simple pair of enemas once a month for maintenance.
Small shower-shot before going to bed each night -- just in case I might want play or have an aneros session. Next morning I'll clear the sinuses with a 'neti' bottle.
Then, there's the occasional simple enema when I think I'd feel better for having one. ... It's all good!