I have had to do this from time to time. The only think I have found to work okay is beer corn. I get an 18 pack of the cheapest nastiest beer at the store and a bag of corn then I split the bag between 5 gal buckets with lids and split the beer among them then let it sit on the back of the property for at least 2 weeks. Most of the time it pops the lid, but is some rank stuff I always duck tape the lid when I put it in the bed of the truck to travel to my hunting grounds.

i did put out some of that rootin juice one year in Bow season and had a wallow there by the time I got back for rifle season, but i really didn't see any more then the beercorn mash.