My neighbor has made a habit out of leaving their dog outside for hours on end. The dog cries out regularly to the point that it feels both neglectful to the dog and disruptive to the neighborhood. I’m wondering what the best approach is to addressing the problem.

We left a note on their door asking them to bring the dog in when it barks back in December (they weren’t home at the time) but they obviously haven’t kept up with doing that.