Last year I had quite the time with corm worms and other insects on my corn. I was planning to spray my corn this year to hopefully reduce the loss from insect damage. does anyone have a cheap, easy to find (like at Lowe's) suggestion on what type of chemical to use, and also when the best time to apply it is. Currently my corn is between waist and chest high (I am 6' so approx. 3-4 ft high)

Thanks...kenny