Office cleaning goes wrong slowly. The bins get emptied, so it looks fine at a glance. But the microwave stays grubby, the meeting room glass keeps its fingerprints and the end-of-trip showers start to smell. Staff notice long before anyone writes it down.
Then the complaints land on the office manager. They chase the cleaning company, someone promises to fix it, and a few weeks later the same issues are back. Nobody can say for sure what was cleaned last night or who was rostered on.
A good office clean should be invisible. Your people arrive, the place is ready, and when something does slip, there's one person to call and a record that shows it was sorted.