I found an apple tree while hunting on private land this season. I shook about 10-20 out of the tree. On the next visit, they were all gone. Never did see any deer, but the results speak for themself. Something ate them. It may have been a bear, elk or deer. Didn't matter, I had all three tags, just had to be in the right season is all. I did not get my deer under said tree this year, however, I did visit that tree at least three times. Each time, the apples shaken out from the previous days trip were gone, all gone.
If you're not allowed to bait, don't do such and find the natural sources and give them a try. Oak trees (acorns), apple trees and elderberries are prevalent in Eastern Oregon. My BIL killed himself a weighty 3x3 last year in an oak grove right at dusk. Wheat fields and good grass do the trick too, but they're typically not in places you can camp out because their fields, they are everywhere once you get out of the mountains.
I planted half of one of those game salt licks last year during deer season, only to find out I was out of bounds for my Elk unit...drat. Regardless, I don't mind doing this for it provides sustenance to the whole population that comes across it, not just the animal I hope to harvest.
I realize food plots is more harvesting than hunting, but the animals get fed well and you don't harvest every one that benefits from the feed. This may mean the difference for surviving the winter for some of them.