What rotten luck! I agree with you on the bait - too great of chance the wind could blow it down where the birds or dog could find it. Have you tried running hot wire around the tops & bottoms? My buddy has successfully kept the foxes out of her coop with it. That's one of the many things on my to-do list. Knock on wood, hawks are the only things I've had an issue with so far, and they're fairly easy to thwart. As much as I've cursed them, perhaps that development behind me has some benefit, but sooner or later a 4-legged varmint is bound to show up...