the handle(pump type) and or dispensing tip.
Pigs in the credit union I managed as a facilities type put their water bottles on the spout of the water cooler.
I said something and mgmnt did nothing so I sent out an email telling everyone the red crap on the spout is lip stick If you don’t want to get sick bring your own water.That didn’t go over to well.
Large groups of people tend to be pigs especially large groups of women.
The mens room was immaculate and the ladies(wrong term) room was always filthy by noon.
I had a job that required me to clean some public restrooms in city parks. The ladies' rooms were absolutely disgusting. The men's rooms were OK.