"Aspergillus flavus" strain AF36 is not carcinogenic and is toxin-free. It is used as an active ingredient in pesticides. AF36 is a fungal antagonist and is applied as a commercial biocontrol to cotton and corn to reduce aflatoxin exposure. AF36 is grown on sterile seeds which serve as the carrier and a source of nutrients. After application and colonization, AF36 growing seeds will out-compete aflatoxin-producing strains of "A. flavus". Non-aflatoxin spore dispersal is aided by wind and insects.