Interior cleaning occurs in a small enclosure containing chemicals, electrical tools, concealed sharp objects, bodily residues, food, moisture, heat, and safety systems. Sprays and vapors concentrate near the breathing zone; wet cords and extractors operate beside liquid; brushes and steam can injure; contaminated recovery material remains hazardous.
The vehicle itself adds consequences. Residue must not make pedals, steering, mats, seats, or controls slippery; moisture must stay out of modules and retractors; cleaners must not affect airbags, webbing, child-seat interfaces, or display visibility. Labels, PPE, ventilation, isolation, restrained application, and final functional inspection are independent gates.