WELL, this is against the law, or they really frown on it here. If he is coming in same way evertime,you can give him a little shock. Like 440 works well.
I have a buddy that cleared road ways,etc in nam he sat up a little bomb device for his returning theif Messed him up pretty bad. And he like to got in big trouble over it.
But sometimes you have take care of business !!

*Wanted Pierce Pennant Petroleum*