The room nobody visits is the room that surprises people
A store that is opened twice a year accumulates quietly. Dust settles evenly, a small roof leak marks a stack of boxes without anyone noticing, and a shelf sags under a load that was meant to be temporary. None of this is dramatic while the door is shut, and all of it becomes urgent on the day somebody needs what is inside. By then the cost of the neglect is measured in what was stored, not in what the cleaning would have been.
A modest periodic attendance changes that. Even a quarterly visit puts a person in the room who is looking at surfaces rather than searching for an item, and who has a reason to report what they see. The cleaning itself is worthwhile, but on many sites the early observation is the more valuable half of the arrangement, and it costs very little to arrange. Most sites that add this item to a programme keep it, because the first attendance usually finds something worth knowing.
