Weekend hunt I wouldn't take anything. It will take some time for them to find it + sour is better. Future note you can mix beer with the corn, let it perk for a week, (dont get any on you or your truck) then they could find it faster. You can go your local grain/feed store and get the strawberry powder and mix with the corn. This stuff is very strong and they use it for feeding young pigs. Works well also. I have been told that ripe sardines work well also.
Go out early watch ponds/streams. Sometimes you have to kick them out of the thick cover. Hunt at night with spot lights.
Good luck