Why the boundary is not obvious in a small facility
In a large plant the line is drawn by physical separation: process areas are distinct rooms with their own regimes. In a converted warehouse where mixing, packing, cold storage and dispatch share one open space, the boundary has to be drawn by surface and by time rather than by wall. That takes a conversation rather than a template, and it usually surprises both parties how much needed deciding.
The consequences of guessing run both ways. A contractor cleaning a process surface without understanding the verification requirement can invalidate a check the business relies on. A contractor avoiding everything near production leaves floors and drains that nobody else cleans, which is where most hygiene findings originate. Neither outcome is discovered quickly, which is why the split deserves the time.
