I've had the best luck letting those neighbors, who own dogs, know (as I'm trying to be a good neighbor) that we almost always keep poison/leg holds/snares out on our property for foxes/coyotes; and, `gee, we'd sure hate it if you didn't take that into consideration if you're going to be letting your dogs wander...' There really isn't anything they can say (and none have, so far). If we weren't in a rural enough area where loose dogs are merely road kill waiting to happen, I'm afraid the perimeter would have to be electrified, otherwise we'd be tied up in civil actions for our being deprived of our right to use and enoy our property. If you can video the dogs in your yard, do so. Try to get the dogs to look in your direction and, with the vid still running, turn away and run screaming `don't bite me! don't bite me!'. Call the cops and show them the video... The owner's vicious proxy agents of trespass and destruction! Let the state take them off to be put down... Best of luck!