[jlangemeier]

One bio-ethical route (at least for many of us in the Mid/Mountain-West US) is to use a deer or pigs blood dilute. It isn't harmful for edible plants (you should be at least rinsing your produce anyway) and it keeps most foragers off the goods - minus birds, but netting part of the trees or shrubs is a good way to deal with birds over foraging produce.

If there's a local butcher they're a ready supply of the stuff, and it helps your local markets so win-win. Or if you already hunt for meat (or have friends that do), it's just making sure you're using even more of the animal, so again, win-win. If you don't think that locally sourced meats are ethically/environmentally sustainable then... ummm... /shrug; there's other methods, but none that have been as effective for our plot size.