Why timing matters more than effort
A bin room washed on the night before collection is a bin room washed around full bins, with the worst of the floor inaccessible underneath them. The same work performed after collection, when the room is empty or nearly so, produces a genuinely clean floor and takes less time. It is the same task with the same effort and a completely different outcome, decided entirely by which night it happens.
The same logic applies to the deeper items. Washing walls, cleaning drains, deodorising and dealing with the corners are all realistic in an empty room and largely impossible in a full one. Placing those tasks immediately after collection is what makes them achievable at all, and it is a straightforward adjustment once somebody has actually asked when the trucks come. Asking the collection days is a two-minute question that changes the whole task.
