Mentally unstable tenant

[Aleksandra U.]

Hello, I have a problem with my current tenant (again!! I guess I need to work on my screening skills). They turned out to be, simply call it, crazy! I rented it to couple and the aunt. 3 adults. Aunt just decided to move out breaking the whole deal. Just after 2 months! And the reason was I told her few times she cannot smoke inside. They knew about no smoking, we talked about it, it's in the lease. So she is gone, those two left. And they still smoke inside! I texted him about it and he calls it harassment, he is not smoking, it's religious candle. And so on... I also suspect there are 2 more people that are not on lease, living there.When I ask about it, he said I have no right to ask about it, they are just visiting etc. Finally I had enough and gave them proper notice on the April 30. It's month to month lease so no reason needed. He sent me whole bunch of nasty texts, calling me names and threatening me. Went I went there yesterday (it's duplex and I'm working on second floor unit) there was some substance splashed on my freshly painted hallway walls. Called guys mom, since he didn't answer his phone. She told me they said someone tried to break in, and the girlfriend pour that thing on the intruder. Hmmm. Yeah. And the police was called and report filled. So I called local police and was told there was no intervention at that address. What now? I have mentally unstable tenants who doesn't want to move out. He didn't pay rent yet for May either. What's my options? Can I just refuse to take rent and go straight to eviction? Or should I play nice, take rent (if they pay) and not to do anything since they are crazy and might cause more damage and wait for the end of the month hoping they will move out. I have all his texts saved. Pictures of damaged walls. Thank you for advice!