Thankfully that never happened where I worked. It was always a concern for me though because the sink where we made coffee and washed out the carafes had all its grey water pool in a tank and when there was enough of it, it was pumped out of the tank, up to the ceiling level where it traveled through the store, into the back room where it drained out into a big sink. It smelled absolutely putrid. I don’t know how it wasn’t a heath code violation.

Awesome place though. I miss working there sometimes!