I'm not a psychologist and can't help a person with a hoarding disorder, but I would try to protect my property from further damage if I could do that by offering the person an easy out. 

I think one is likely a bit bi-polar and that is leading to this current issue.  

Seems like an easy decision to me.I had a high maintenance tenant once (I suspect she also was bipolar) that for some reason had more than their fair share of legit problems with the unit as well as a slew of other items that they complained about or was of their own doing. 

The people dealing with this disorder is unimaginable for me.

This occupant has a rap sheet a mile long from prior convictions and he is on drugs.We posted a notice to Quit, and now he is sending us pictures of the inside like he is going to use it against us when we didn't put him there or want anyone there to begin with.He is texting us novels of bi polar communication from threats to compliments to prayer requests and keeps cycling in that same manner.

For US based students, I still do a background check to make sure there's no big history of drugs or disorderly conduct/violence.

Unless you have multiple personality disorder, there is no need to hire an attorney to do this since you are unlikely to sue yourself. 

That guy was bipolar and I am so happy that we did not share any information because for sure he would use it against us.

We also tell the tenants that if the dog's barking bothers other tenants the mutt will be evicted through the court system for disorderly conduct.         

However I’m very paranoid about following the law to the “T”, especially knowing full well I have Attention Deficit Disorder (ADD) which makes me mess-up the finer details when filing paperwork.