Bobbie
First an email went out to all staff, politely asking everybody to leave the toilets in a sanitary condition.
Then the women put a polite sign up reminding toilet users to be hygenic.
Finally, one of my wonderful and direct colleagues told the men's male manager.
Eventually nanagement listened to the women as a collective.
Re the door opening incident. The WOMAN felt embarrassed and walked straight out (yup, she was forced to leave and SHE felt awkward) and no shame or apology from the MAN.
We are conditioned to be polite and not make a fuss.