Why wasn't the dogs owner ticketed, especially with the evidence? If this continues, I would first try to catch one and take it to the pound, let the owner go pay to get it out a couple times. If that doesnt work, and the sheriff wont ticket the guy, then I would say you will have to take more "drastic" measures. It is too bad, because its not the dogs fault. Too bad you could not put a shock collar on the owner and light him up a few times when his dogs are chasing deer.