There is a critical issue surrounding a wide range of fly pests. The production of Spalangia wasps has effectively solved this problem. Spalangia wasps, scientifically known as Spalangia endius, are a common source of pest control. Specific flies, including the House and Stable fly, are a typical cause for concern within any feedlot. Which is true for any area where animal husbandry is practiced. Horse studs, piggeries, and poultry farms are areas where infestation only raises additional issues. Due to the chance of chemical residue ending up in the meat or milk products, these businesses require an alternative solution. As mentioned, the featured insect that has greatly influenced this issue is the Spalangia wasp.