Any other city, there could be some reasonable explanations for crusty material that pooled around the drain in the bath tub.
From a flight attendant on layover. An odd little spot, approximately RIGHT where someone would have been sitting, at an airport hotel near BWI.
In the gray area between the toilet and the cabinet at a hotel near Laguardia.
From a worker in Las Vegas for two months, at an off-strip “extended stay”
On a chair at an airport hotel in Denver.
From Flight Attendant X: I always dread checking the lavs at the end of flights. I wonder if Harry Dunne from “Dumb And Dumber” got dosed and was on-board.