USDA Agricultural Research Service A scent that petunias and snapdragons release to attract pollinators may be an environmentally friendly control for pests like the spotted wing drosophila fly (SWD) and the brown marmorated stink bug. Agricultural Research Service (ARS) chemist Aijun Zhang discovered the fragrant chemical methyl benzoate, which is also a popular ingredient approved by the U.S. Food and …