I work in the public sector. In my office we have a kitchenette, shared by around 30 people. Some of those people do not wash up. Ever - leaving porridge encrusted bowls, yogurt covered spoons, egg remnants for others to deal with. There is the obligatory "please wash up your own pots" sign which these people clearly ignore. I'm sure it's the same people, as everyone who has their own (from home) bowls, plates, cutlery etc on their desk, nice and clean, clearly washes up. The offenders use the items from the odds and sods cupboard items, owned by no-one, the chipped plate, the Tesco value mugs etc and then dump them in the sink.
I don't wash them up, I just ignore them, but I have to take them out of the sink, and put them on the side to do my own washing up, it's grim.
WIBU to put a sign up stating anything not washed up from now on will be binned?