So this thread is titled "Baiting Ethics" then I'm assuming that you are not asking if it's ethical to bait but how to bait ethically. If that's the question then I'd say use something more nutritional than corn. After all, you're asking the deer to give it's life for food so corn just isn't good enough nor is a $10 mineral block or a bag of salt. I think you should buy the best deer food on the market if you want to bait ethically and put it in a place where there's plenty of water and bedding to make the deer as comfortable as possible before you put it to rest in your freezer....