The route carries the soil for the whole building
Cardboard fibre, pallet grit, shrink wrap fragments and water tracked in from the street all enter at the same point. From there they are distributed by trolley wheels along a predictable path. Cleaning the tenancy floor without addressing the route means the same soil returns within a day, and the tenancy scope absorbs a cost created somewhere else in the building.
Mapping the path takes one walk with a delivery in progress. What emerges is a short list: the apron outside the roller door, the threshold plate, the lift car floor and door tracks, and the first stretch of corridor at each level. Those items justify their own frequency, and once they are held, the tenancy areas need less rather than more. Setting an interval and reviewing it after the first few cycles is more useful than adopting a standard figure that may be twice or half what the route requires.
