some people do harvest them, some don't. I am one of the ones that don't, due to what I've seen them eat on (other dead pigs, week old rotting cows, pretty much anything smelly). I do eradicate them off our farm as they are a nuisance, but if you let them lay even the turkey vultures won't eat them.
Same here. When the buzzards ignore them, you know they are nasty. I have also noticed when I leave one there dead, the others will disappear for a couple of weeks at least, and get thinned out by my neighbors before returning. I have the densest cover around with 4 year old loblolly pines planted @ 600 seedlings per acre......when I planted we didn't have hogs. I'd say there are 20 on the property now. One big black boar hog that only moves between midnight and 3am.
I started running boss buck feeders a couple of years ago....the big black boar showed up first, then the others. I took down the feeders last year but they won't leave. And they wreck my foodplots.......only takes them a night or two to make it look like a B-52 came over and dropped a bunch of cluster bombs.