For the purpose of enforcing this chapter, carriers engaged in intrastate commerce, and persons receiving food, drugs, devices or cosmetics in intrastate commerce or holding those articles so received, shall, upon the request of a duly authorized representative of the commissioner, permit the representative at reasonable times to have access to and to copy all records showing the movement in intrastate commerce of any food, drug, device or cosmetic, or the holding of the food, drug, device or cosmetic during or after the movement, and the quantity, shipper and consignee of the food, drug, device or cosmetic; and it shall be unlawful for the carrier or person to fail to permit the access to and the copying of the records so requested when the request is accompanied by a statement in writing specifying the nature or kind of food, drug, device or cosmetic to which the request relates; provided, that evidence obtained under this section shall not be used in criminal prosecution of the person from whom obtained; provided, further, that carriers shall not be subject to the other provisions of this chapter by reason of their receipt, carriage, holding or delivery of food, drugs, devices or cosmetics in the usual course of business as carriers.