General Hanson concludes that the only way to destroy the beasts "en masse" is to use a nuclear weapon and destroy Chicago. However, Wainwright realizes that the locusts are warm-weather creatures. He concludes that he might be able to lure the locusts into Lake Michigan using a decoy locust mating call, generated electronically with test-tone oscillators. There, the cold water will incapacitate them, and they will drown. The plan works at the last possible moment. The monstrous locusts drown, but Wainwright and Aimes wonder if other insects or animals might have eaten other radioactive crops.