I did that for a little while after I'd discovered a bidet but didn't have my own. But this one [1] is only about $25 and is really worth it. And I bring this [2] with me when I go out.

[1] https://www.amazon.com/gp/product/B003TPGPUW/ref=oh_aui_sear... [2] https://www.amazon.com/gp/product/B008CSDKSQ/ref=oh_aui_sear...

You might want to use a "bidet shower" if you don’t have a standalone bidet: https://en.wikipedia.org/wiki/Bidet_shower.

It connects to your water faucet or your toilet tank so you don’t spread germs in the sink. On Amazon they start at $ 10.

Hope no one uses that sink beside you. A "Biffy" toilet attachment is very convenient to install, inexpensive, and potentially a lot more considerate to others.

Sink is easy to clean. Nothing is left behind. I don't see this problem. It is like bidet, but taller. I first clean my ass, then the sink and finally my hands.