[Myrddin]

Shut off the water and power and stand guard. They have to leave eventually. Call a bonded locksmith and have the police/sheriff do a "civil standby" while you extract the cretins from your property. The "civil standby" provides a law enforcement presence to supervise the extraction so you have no false accusations.

[driftdiver]

Just file for eviction and press charges. If the guy has a contract then it will come out in court.

[LeonardFMason]

Hmmmmm.... Something tells me that a police search of the property(outside)would would turn up a ton of “stolen” property from the neighborhood. Get a few cooperative neighbors and this would be easy. There is a 99.9% probability that these career criminals have something to hide and could not pass the scrutiny of a search warranty.

Monitor the home for when they leave. Hire a couple triaxles trucks to dump a couple loads of 4” stone to block the driveway, garage door, and every other entrance.

I would torment them relentlessly.