According to Sonya Lunder, a senior analyst with the Environmental Working Group, the answer is an unequivocal yes, for several reasons. One is what the produce industry refers to as "pesticide drift": The wind can—and frequently does—blow chemicals from nearby conventional fields onto organic crops. Pesticide contamination can also happen in the warehouse, since many produce companies use the same facilities to process organic and conventional products. In that case, companies are supposed to use the label "organically grown" instead of "organic," which can mislead consumers. "The labels are really confusing," says Lunder. "When people say they're transitional organic, there might be traces left in the soil. If you see no-spray, they still might be using synthetic fertilizer, for example."