It's happening inside your facility -- but do these contract workers doing the packaging and transport report to your management/leadership team, or to their own separate managers? Do they fill out logistical or safety/quality paperwork and turn it in to your management, or is all the information they operate on and gather turned in to their own managers? How are the packaging and shipping areas physically separated from the blending area? Is there a GMP / handwashing separation between them?
If there isn't a significant level of separation, they are likely in scope up to the point of material leaving your facility.