The pink bollworm is a key pest in cotton in the western US. The pest was declared officially eradicated from the USA in October 2018 after a Federal/State/Producer partnership. Much of the technology used in the eradication program resulted from research conducted by ARS in Phoenix and Maricopa. We continue to provide post-eradication assistance to the industry including research and monitoring of resistance to Bt cotton, one of the key technologies of the eradication program.