You forgot wiping our asses with paper. Most countries use a bidet to wash theirs. The father of a family of Syrian refugees of nine who adopted me as their Grandpa has installed a portable bidet on my toilet. And that's the only way to go.
You should all do the same and wash when you go; you'll die happier because of it.
PS Cost? Around $50.00 Time to install? 15 minutes. Tools needed? Only one? Pleasure it procures? Incalculable, two minutes every days for the rest of your life.
I say to Mushira, who supply me everyday with the food she makes, that every time I eat I think of her. And I say to Jelal, who installed my bidet, that I think of him every time I poop; I really do every day, and told him once.