Just fyi Cole, Trichogramma wasp are very effective against corn earworms and if you provide a nectar source. (Zinnias and radish blooms are 2 cheap and effective flowers they like) and a habitat for them they will stay and the population will grow each year. At my old place I built a little bee house thing for them with bamboo and straws and by the 3rd year there were literally thousands of them flying around the garden. Easy,cheap, effective and natural. You will still have a few ears of corn with damage but after you have a sufficient population the damage is reduced around 90% in my experience. Rodger Winn, who throws the annual SPLATT tomato tasting does the same thing and said last year that he hardly ever has any damage from earworms, and he had a crap-ton of corn growing.
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