5 gallon bucket, fill half way with corn then put some old bait cheese (from a fish market) in and top off with water. set in the hot sun for a few days and dont open untill you are ready to use it and make sure you stand up wind... pour in a few beers to ripen it up a little more also. We also pour strawberry koolaide mix (powder 4 packets) on top of a pile of corn. We have used all sorts of stuff but these to seem to work very well and keep them coming for more.