Poison Control for Dogs in the Garden

I live in a dog friendly neighborhood. When one of our canine neighbors goes outdoors, I can hear him woofing softly for everyone else to come out and play. Without fail, at least one other mutt will rise to the challenge and con his owner into letting him out where both dogs will commence to barking like crazy. If there are other dogs in their respective yards, it'll become a barkfest of epic