I found another way other than the bucket to sour corn, I did this by accident. I bought corn in the weave type plastic or fiber bags. I got one wet from a rain, I thought it was ok but when I took it to the feeder it did not smell but when I opened the bag it was an awful sour smell, the hogs were all over it that night. The nice thing is not dealing with the sour smell until you are ready for the hogs.