I personally have never used Diesel in the soured corn, but have wrapped Burlap feed sacks soaked in diesel around fence posts and periodically go around resoaking them.
Ican tell you,the best attractant we ever used up to 4 or 5yrs ago, was the waste from the Beer Vatsfrom theBudweiser Brewery about 11 miles from me. They would sell it to Camden Grain and they would sell it to the farmers for $10 in your own 55galdrum. One drum would do 3 feeders. Not only that they loved it, but got one heck of a Buzz to boot!
But the brewery is no more, only Bush Gardens!