I like the razor blade and rat trap ideas all that is left to do is make a sweep of the area the next day and see who has their hand bandaged ...LOL... Then adjust his attitude, but then rat poison is an interesting alternative ... wicked way to die ...LOL...I think I would wait in the alley I'm not a small guy and I've been told I have a short fuse ..LOL... a very informative story would have never thought of that ....