<human>: Can you succinctly summarize the text in 1-3 sentences?

For about a month, one of our roommates has declined to clean up after himself and do his own dishes. We have no problem if he does this in his own room, but he also does it in the shared areas of our apartment. 

For example, he will leave empty, or semi-empty, pop cans sitting on the coffee table or he will leave used napkins and his dirty plate on the kitchen island, only a few feet away is the sink. He has refused to do the dishes, even though many of them are his ,and when we ask him to do them he says he did them the night before, which all of us know the dishes from last night are still there. 

We have left him two notes asking him politely to clean up after himself, all of them resulted in him crossing it out and writing "FAG" across it. I finally left him a more blatant note this morning after we told him to clean his mess up ,but I came to the same message. 

I am not an aggressive person and nor do I want to make the rest of my time here uncomfortable, but we are sick of cleaning up after him. How do we send the message to him that we are serious and not joking?
<bot>: How do my roommates and I politely tell our other roommate to clean up after himself while still being assertive and not being called "fags"?