Did this in Fl. They could smell it and brought it right up. We used the tropical fruit (?).I read somewhere - I don't know where, and haven't had occasion to try this - but apparently hogs love lime green Jell-o. Sprinkle a packet in with your shelled corn. Also, use a post-hole digger to dig 3-4' down, as narrow as you can. Fill the post hole with shelled corn dosed with Jell-o powder, they'll go nuts (and take time) digging it back out, instead of just slurping up corn on the ground.