Ages ago in Poland we had those chutes as well in big apartment buildings. On top of the smell, there were also impossible-to-eradicate ants and cockroaches liv

Ages ago in Poland we had those chutes as well in big apartment buildings. On top of the smell, there were also impossible-to-eradicate ants and cockroaches living in those chutes. They were eventually locked. I wonder how the pneumatic tunes deal with the pest problem.