I made a claim on their deposit and they hired an attorney and threatened to sue.  

The difference is that you didn't say there would be a teensy increase, and the tenant threatened to move out if you did - and then you tuck your tail and say, "Oh, no!

I bought my first rental property in May in Huntsville, Al, and now the insurance company (State Farm) is threatening to cancel our policy because the property has been vacant for over 30 days.  

But, it's my opinion, that legally you aren't liable for dust or damage to their stuff.If they threaten to sue you, what I'd do is say, "Well, I don't think it's my responsibility, but it does make sense to let a judge decide, so you go ahead and sue if you want to, and I'll abide by the judge's ruling."  

I have told a few threatening lawyers to more or less shove it where the sun don't shine, knowing full well they will lose in court.

I would threaten the eviction.

Renting will be difficult with an eviction on his record, so it is in his best interest to leave now.I am not saying to threaten him.

When a law enforcement officer is presented with a person on or in a property where the person occupying it has no claim to the property under color of title, typically the law enforcement officer is likely to summarily order that person to leave the property and will threaten arrest under trespass laws if the person returns. 

The post office will then put a sticker on it with their new address, and return the envelope to you.http://pe.usps.com/qsg_archive/pdf/qsg_archive_201...What my daughter did over her PMC disaster, is threaten to sue them and that worked for her.  

And give them a fax number to fax it back to me.Then, if the applicant actually provided this, I'd Google and make sure this medical fax number is from a bonafide medical office.And don't be intimidated by a tenant who threatens to complain to HUD if you do this and deny them.