Mosquitoes are more than just pesky. Certain types of insect serve as efficient vectors for infectious diseases that pose great harm to humans. Oxitec, a subsidiary of Intrexon, has developed a genetically altered male of the Aedes aegypti mosquito designed to mate with wild females to produce offspring that die before becoming adults. The effort is meant to provide a highly targeted alternative to insecticides that are broad acting, can cause harm to humans and other animals, and may be unable to effectively reach their intended targets in urban environments. We spoke to Hadyn Parry, CEO of Oxitec, about how the company breeds billions of mosquitos that can’t reproduce, how it delivers them to where they are needed, and how the company is addressing the regulatory barriers to demonstrate its technology is safe and effective.