Sodium Ürtho-phenylphenate (SOPP) is a postharvest pesticide commonly used on citrus. SOPP poses some food safety risks and is currently in the Environmental Protection Agency's Stage IV of the pesticide re-registration process. Costs to the fresh grapefruit industry are estimated for increases in the postharvest loss rates of fresh grapefruit following an SOPP ban. The ban's effects on domestic and export sales of fresh and processed grapefruit are estimated.