I can't believe this wasn't posted yet.
I've given this some more thought and was wondering if you have talked to your other neighbors and how they feel about what's going on? Do the dogs run into their yards? Are they just as pissed as you? It sounded like you're in the country with a 4 stack of houses all built close together. If at all possible you might want to get with your other neighbors just in case, when you do call the Warden/Sheriff the other neighbors have your back. This should also take care of your "neighbor war" because instead of one on one confrontation they would now be facing a 3 on 1 and nobody wants to have everyone near them pissed off. Most renters either comply or move away when confronted with overwhelming odds from a community. Just a thought and hopefully to keep this from escalating further.
Trail Cam or some other motion sensor/capture device, they are relatively cheap nowadays. Set it up and you'll have proof and time stamps of all the times they entered your yard.