Section 001-125-IV - ADDITIONAL REQUIREMENTS FOR MAINE BAG GRADESA. All consumer packs of potatoes shall have been treated with an approved sprout inhibitor after January 15th of each year at rates of application and otherwise as prescribed on the Pesticide label. Consumer packs may be subject to random sampling and laboratory testing by the residue testing section of a designated Laboratory for the presence of an approved sprout inhibitor.B. Non-approved varieties are not allowed in a Maine Bag.01-001 C.M.R. ch. 125, § IV