Excuse me for asking,( i didnt read the whole thread) But have you already told him to his face to not come by anymore? This would be my first step...espically if he thinks he can somewhat go there because you made hima road and all for his trees. SOme people are somewhat slow on things and need to be told exactly what you want from them.. Honestly..try to talk to him. And if he responds badly..THEN.. you call the police. or the mafia thats looking for him...just my opinion. And good luck!