In some cases, pesticides are not needed to control an undesirable pest, simply releasing the undesirable pest’s predator can naturally eradicate the problem. Ayanava Majumdar, an Alabama Extension entomologist says that this option is commercially available to specialty crop growers. One example of a predator is the green lacewing who feeds on aphids, mites and whiteflies, and also the larvae of fruitworms, armyworms and loopers. Majumdar said. “If you want immediate control of, say aphids, in your high tunnel, you should get these larvae, and those larvae will go hunting as you release them.”
https://specialtycropindustry.com/beneficial-insect-green-lacewing-key-management-for-aphid-control/