Why control, not cleanliness, sets the boundary
A controlled area has a documented regime specifying who enters, in what order, wearing what, using which products and recording what afterwards. Introducing a general cleaner into that regime breaks it in both directions: material may be carried in, and material that should stay inside may be carried out. The issue is not competence but the integrity of a system somebody is accountable for.
Equipment adds a second layer. Sample storage, incubators, analysers, controlled-temperature units and calibrated instruments are sensitive to disturbance, vibration and moisture, and a single wiped-over control panel can invalidate work in progress. Excluding those spaces by name is far safer than relying on a general instruction to be careful around equipment. The exclusion is written against the room rather than left to a judgement about equipment.
