You could try some ground cayenne, (or hottest you can find), pepper traps. A little hinged lid box or can. The lid needs to be heavy enough that the chickens can't lift, but have a lip so the dog can nose it up. Rub some liver treats or something he can smell and root in after. The pepper will draw moisture and you'll have to replace it occasionally. You can put some rice in a cloth of paper bag on the bottom of the "trap", shape a cup in it and put the pepper on top, it will keep it "sniffable" longer. Put a few along the base of the run, the rout he comes in. Picture the bird house you made in 6th grade, without the hole.The neighbor's dog came back again today. I had posted about a month ago that he broke into our run and killed one of our chickens. We reinforced the run, and this time he wasn't able to break in, but he kept throwing himself against the run, then the coop. We found out we can't put up an electric fence, per the HOA.
The neighbors were snarky about it this time. He is kept behind a wireless fence, but apparently chicken is worth getting shocked.
We called animal control to ask what could be done since the neighbors were not cooperative. They said legally we can kill the dog if it is even attempting to get into the pen, but I would hate to go that far. However, he is going to keep coming back. We are not going to always be home, and even if we are, this is a 100 plus pound black lab/pitbull mix. My husband doesn't want me attempting to chase him off if he isn't there, in case the dog becomes aggressive.
Ugh. I am not really asking for advice, but just venting!