when you need to empty it, do you need to rinse it out before re-insertion? i just see the timeline as:
go into bathroom and enter stall
remove cup and dump contents into toilet
leave stall, hands bloodied and holding plastic cup
rinse cup and re-enter stall
re-insert cup
leave stall, hands bloodied again and then wash hands
what if there is a line? do you put a "hold" on the stall?