What a settled cleaner actually knows
After several months a cleaner carries a working model of the building. Which office is used late on Thursdays. Which floor waste dries out and needs flushing. Which door has to be lifted. Which bin fills fastest. Which surface marks if the wrong cloth touches it. Where the spare liners are actually kept. That knowledge is worth more than any procedure and it is rebuilt slowly and expensively each time the person changes.
They also notice change. A cleaner who has worked a building for a year will spot that a room has started being used differently, that a tap has begun dripping, that an area is accumulating stock. A cleaner in their second week notices none of that because they have no baseline. That noticing is a substantial part of what a client is buying without ever having asked for it.
