Most Helpful Guy
As a former law enforcement employee, technically he has established residence at the home therefore you will have to go through the courts to have him evicted. There are ways that officers can assist you with getting him out of the home. What you should do is contact the nonemergency line of your local sheriffs department ask to speak to an officer via phone. They will either have someone they can transfer you to or take your number and have them call you back. One way to get him out immediately is if he has been violent towards you recently.
Most Helpful Girl
You can call the cops for any reason you want. Whether or not they will do anything is another question.