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You are forgetting… soap is involved in the process.

I'm ignorant on this aspect, and would appreciate enlightenment. Is soap used in most?

I've never seen anywhere to put soap, and no controls for it's usage, and I would imagine this would need controls to ensure adequate rinsing, but my exposure has mostly been hotel rooms. I imagine that is something that would need to be refilled?

I know I use it. I am italian so we normally have a bidet, not a little shower thingy that gets called (improperly) a bidet.

In any house you go, you will see soap on the bidet… So I'm probably not an outlier in using soap.

Argentine here. Italian bidets are just a sink you can sit on, with a faucet on the rear. You clean yourself using your hands. Argentine bidets are also a sink you can sit on, but they have a shower pointing up to your rear. There's basically two ways to go: don't use your hands down there and let the water pressure do its thing, then go back to the toilet and dry with TP; or use your hands and soap and dry with a towel.

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