I actually spoke to the owners of the cats (nice people, so I'm not gonna pick a fight) and they admitted that they noticed their cats have not been using their litterbox for months now. Obviously I told them "DUH" they're using my yard! Unfortunately there is nothing the owners can do about it and I've literally shot at them ( the cats, not the owners) with a paintball gun in my yard and they KEEP coming back time after time. So yeah, these cats are a real problem...but on the 26th of March my solution should be on it's way to me