A new study published in the Journal of Medical Entomology is the first to report that bed bugs have developed resistance to a class of insecticides known as neonicotinoids, or neonics, the shortened name. Neonics are the most widely used group of insecticides today, and several products have been developed for bed bug control over the past few years that combine neonics with pyrethroids, another class of insecticide.
Dr. Alvaro Romero from New Mexico State University and Dr. Troy Anderson from Virginia Tech collected bed bugs from human dwellings in Cincinnati and Michigan and exposed them to four different neonics: acetamiprid, dinotefuran, imidacloprid, and thiamethoxam. They also applied these neonics to a bed bug colony kept by Dr. Harold Harlan for more than 30 years without any insecticide exposure, and to a pyrethroid-resistant population from Jersey City that had not been exposed to neonics since they were collected in New Jersey in 2008.