Whilst we have a cleaner at work who does the toilets every morning, we are expected to clean up after ourselves if we have put, erm, 'skid marks' in the pot and to spray the air freshener if we've done a stinker. It's more about good manners than anything.
We're also expected to clean/wash up after ourselves in the kitchen and there's a rota for cleaning/clearing out the fridge.
On the other hand, the museum my OH used to manage didn't have appointed cleaners so all the staff would muck in and do the job, including OH. He always says he'll never ask his staff to do something he wouldn't do himself, no matter how unpleasant.