I have the same problem with HUGE sasquatch of a mut that leaves turds the size of a Buick in my yard. I talked to them several times, and nothing came of it. I broght a shovel to their house, put it on there door step with a note to come over and clean up their dog's [bleep]. It has been tollerable since.
That ogre of a dog has been over a few times, but I usually chase his ass with a shovel back to his yard, praying just once that I'll catch that sucker.
It's a pretty funny sight for the neighbors I'm sure... watching fat Tom chase the neighbor dog across 2 yards, swinging a shovel in his boxers, in calf deep snow....maybe that's why they don't come over any more.
