Farmers often use insecticides, also known as pesticides, to keep insects from damaging or eating their crops. The Environmental Protection Agency establishes maximum insecticide residue levels in our food, and the Food and Drug Administration and the Department of Agriculture send inspectors to monitor insecticides on the nation’s crops. While growers are required to use only government-approved insecticides in a safe and consistent manner, there can still be residues even after you scrub ...