Why back-of-house is systematically under-scoped
Front-of-house cleaning is visible, measured constantly and protected by commercial pressure. Back-of-house is none of those things, so when a budget tightens it is the first area reduced, and the reduction is invisible for months. By the time it is noticed the condition has usually declined well past the point where the original frequency would restore it, which turns a saving into a restoration cost.
It is also the area where scopes are vaguest. A line saying back-of-house areas cleaned nightly covers a loading dock, a linen store and a staff canteen with entirely different requirements. Breaking it into individual areas with their own tasks and frequencies is a modest drafting exercise that prevents the whole category from being treated as a single low-priority block. Reinstating a back-of-house standard after a long decline usually costs more than the reduction saved, which is worth stating before the reduction is agreed.
