I was in the bathroom at the same time as two dumpling wrappers. They just waved their hands under the water and that was it!!!! I hope they really wash their hands before they go back to wrapping!
If you think the xiao long baos are the best here, then you obviously haven't tried them at Long's noodle house or Chen's in Vancouver. At Din Tai Fung their pork dumplings are below average.