Office cleaning usually fails quietly. The bins get emptied, but the kitchen bench is still smeared. The vacuum goes around the middle of the room and never under the desks. The paper towel runs out on a Wednesday afternoon, and someone from the office ends up doing a supermarket run.
None of it is a crisis on its own. But it lands on the office manager, who becomes the go-between for every complaint, and on staff, who notice when the place looks tired. In shared buildings it gets worse, because nobody is sure whether the tenant, the landlord or the contractor owns the problem.
What most offices want is simple: a cleaner who does the full scope every time and a person to call when something isn't right.