You can usually reach the same hygienic standard, just with way more difficult maintenance. In fact, cleaning is most of what my “easier to maintain” point is about.

Walls. And a few rivers before they froze over as the sun got dimmer with all the 19^th century soot.

Oh yes, Eastern Brazil was a rusty red plain in the early colonial era

Sex toys for vaginas are simpler, easier to maintain and even DIY. Also, more socially acceptable in big parts of the world.

Oh, that’s why it’s the model organism for genetics research