An expensive machine to tell janitors when the metro elevators smell like pee? ALL THE TIME. Give me the money instead and just tell the janitors to assume the elevators are pissed in multiple times a day if not continuously for lack of public restrooms anywhere near a metro.
https://www.thecity.nyc/2022/12/13/23507813/mta-may-use-urine-detection-tech-for-elevators