Why would you say that? It’s my house and I can do anything I darn well please with my house. A squatter may not do what he pleases with my house.
Everyone should know a couple people they can trust to make someone disappear. This is one of those times.
Encourage him to move out today. If not, move him out physically.
No, you can't. For example you could not set the house on fire. Even if it was empty and you made no insurance claim it would still be arson.
Everyone should know a couple people they can trust to make someone disappear.
On planet reality, they don't.
A house sitter also keeps people from using your empty house as a weekend party pad.