Commuters have been stunned after sickening video emerged of the horrible state of train seats.
One daredevil commuter took it to himself to find out the amount of dust stored in the seats of one train in Canberra, Australia.
Video shows him repeatedly whacking the mouldy-looking upholstery until a cloud of dust starts spewing out from the seat.
The fine dust then vanishes in the air within seconds.
The horrified commuter then the footage on to Reddit and wrote: "They really need to vacuum these train seats."