Windowlene Cleaner

A small plastic spray bottle with a trigger nozzle, filled with a blue-tinted cleaning solution labeled 'Windowlene.' Its cap is slightly loose, allowing the acrid odor of ammonia to escape. Doris uses it to smear streaks of cleaner across a window in the Global Chemicals corridor, the liquid pooling unevenly as the Doctor and Yates slip past unseen. Later, the Doctor writes the taunt 'Get Rid Of Him' in the same cleaner, leaving behind a crude, mocking message that lingers like the facility's overlooked neglect.