To get large quantities of parasitoids for biocontrol of Fall Armyworm (FAW), unless they're reared in a laboratory by experts to multiply their numbers so that you get them to release on your farm. Notwithstanding, there are some natural remedies that you can also use for the management of FAW such Neem extracts. You can prepare aqueous Neem extract (botanicals) and spray them into the whorls of the maize plant to help kill any FAW.