The commissioner shall have experts in sanitation or other competent inspectors inspect all slaughtering, meat canning, salting, packing, rendering, or similar establishments in which animals are slaughtered and their poultry, poultry food products, meat, and meat food products are prepared solely for intrastate commerce. The inspections must be conducted as necessary for the commissioner to know the sanitary conditions of the establishments, and to prescribe the rules of sanitation under which the establishments must be maintained. If an establishment has sanitary conditions that allow poultry, poultry food products, meat, or meat food products to become adulterated, the commissioner shall refuse to allow the poultry, poultry food products, meat, or meat food products to be labeled, marked, stamped, or tagged as “Minnesota Inspected and Passed.”