A small area with a disproportionate effect
The entry is where every occupier and every visitor forms their first impression of a building, and the letterbox bank sits in exactly that spot generating litter on a daily basis. It is a small amount of work in absolute terms and it is highly visible, which makes it one of the better returns available in a cleaning scope. It is also frequently overlooked because it sits between the lobby scope and nobody's specific responsibility.
Treating it as its own item, with a frequency matched to when mail is delivered and collected rather than to the general lobby cycle, addresses it properly. In many buildings a short daily attention to that one spot changes the impression of the entry far more than an increase in attendance anywhere else, and it costs very little to arrange. It is one of the cheapest improvements available in a common property scope.
