Have caretakers call the police.  

That or have him sign a lease that says if for any reason you have to evict him (and lay out terms such as police visits to the property, complaints from neighbors, etc.) that he is not entitled to a refund of any rents.My sister had a similar guy renting from her and all was good until the SWAT Team showed up.

Very good point, search for "verbal judo" it's a technique used by police officers and investigators.

I like the idea of being rewarded according to the problem I’m solving.I’m 50% Polish: So I love getting a dealMy high-level goals for real estate are simple:1.

When I found out about all of this I called the police and told them that these people had broken into the property and were trespassing and I figured that the cops would remove them.

The lackluster customer service is disappointing because if they polish this by 20-30% more, this could be a great company long term. 

There are door jamming devices can be attached to a door to be used and instructions to use them.Written instructions to tenants to keep doors and windows locked.Neighborhood watch meetings, the police usually assist in giving classes and materials.Parking lots with speed bumps helps keep drivers from blasting through at 40 mph instead of 5 mph where kids dart out and get hit.Get with your police department on a security SOP for tenants, have them read and sign it.:)  

If a tenant came to my home and put a gun to my head, demanding $1,000 I would report it to the police...  

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She told her she would just call the police the next time.