People with big dogs and guns don't have to post it on a billboard. I think he was embellishing. He probably only had a claw hammer and an ugly woman by his side. IMHO.
That looks like the work of owners who aren't even there. Nevertheless, I bet it's effective. Who would want to take a chance on breaking down the door and standing face to face with a woman who is so ugly that even the guy sleeping with her admits it?