It happens at universities across the country.
Professors do it. Administrative staff do it.
Some sneak onto campus on evenings or weekends, and quietly do it when no one is around. Others are bold enough to do it during regular office hours.
I'm talking about cleaning. Dusting. Vacuuming. Sweeping. And, for the truly bold: Painting. Unblocking drains. Retrieving and repairing discarded furniture.