Convince them what? To eat chunks of prime rib or pulled pork? If so, by dumping it out on the ground. They may not eat all of it, but this gets composted.  

I also pick up bags of leaves and lawn waste that city folk bag up for me if there isn't a lot of trash and the lawn has weeds. I'll put down a bag and some biochar after they have lost interest. I'm about ready to build another johnson-su inspired bioreactor with all this material.