go to a local resturant and get their bacon grease, usually they'll fall over backwards to get rid of the stuff. Many times you can get old fryer oil too. Dig a hole 3'x3'x 3' add 100# of shelled corn and pour the fryer oil over it,smear the bacon grease on the trees then throw what's left of the grease in the hole on top of everything else (the sun will melt it). Doesn't hurt to pour on a couple cans of beer if you want ( me I just drink the beer ).
There isn't a hog or bear in the area that can resist that mixture.
There's alot of bears around my camp and when we get families that like to watch bears we setup a bait like this down in the meadow below the cabin. Once hogs or bears get on it they stay on it so you'll go thru about 200# of corn and 2 5gal buckets of oil/grease a week easily.