People come to a clinic to feel better, and the room tells them a lot about the care they'll get. Dust on the skirting boards, fingerprints on the reception glass or a toilet that hasn't been checked since lunch makes patients wonder what else is being missed.
Practices also need a level of consistency that general cleaners don't always deliver. Couches, door handles, chairs in the waiting room and the keyboard at reception are touched constantly. If the routine changes with whoever is rostered on, some of those points get skipped, and nobody knows until a patient or doctor points it out.
Practice managers have enough on their plate. Following up a cleaner, re-explaining which rooms are off limits and checking bins the next morning shouldn't be part of the job.