I have a neighbor that is a real D BAG and we haven't talked in years. We have a dog that stays in our yard I would say 95 some percent of the time and when she leaves our yard it is usually to go to the other neighbor when they let their dog out. She has never even crossed the street unless walking with my wife. Here is the problem there are a number of dogs that go through the neighborhood and my neighbor used to throw any dog crap that was in his yard in our yard. I didn't really like it because I don't think it was our dog but I just dealt with it and we cleaned it up just in case some was from our dog. We go out to pick up dog poop every couple of days even in the winter. My wife will even pick up in his yard if she see's any even if she saw another dog do it. For the last few months he has went from tossing it in our yard to throwing it in the driveway, against the garage, even into the garage if the door was open but the latest thing we found when we were picking up a couple days ago was up on the roof. Just curious what I can do about the situation and if that would be considered vandalism? Talking to him really isn't an issue because it would not turn out good from a past problem. My other neighbor who's dog is in his yard a lot said something, and he said he would keep on doing it.