Mich. Comp. Laws § 288.611
The director shall foster and encourage the dairy industry of the state and, for that purpose, shall investigate the general conditions of the dairy farms, dairy plants, single service manufacturers, receiving stations, transfer stations, bulk milk haulers/samplers, can milk trucks, milk tank trucks, milk tank truck cleaning facilities, and distributors with full power to enter upon any premises for such investigation, with the object of improving the quality and creating and maintaining uniformity of the dairy products of the state. If determined necessary by the director, he or she may cause instruction to be given in any dairy farm, dairy plant, single service manufacturer, receiving station, transfer station, and distributor or in any locality in this state, in order to secure the proper feeding and care of dairy animals, the proper maintenance and sanitation of milk handling equipment, the proper maintenance of milk production facilities, the proper maintenance of milk processing facilities, the proper maintenance of single service facilities, the proper handling and storage of milk, dairy products, or single service containers, or the practical operation of any plant producing dairy products or single service containers for dairy products. In order to secure a uniform and standard quality of dairy products in the state, the director shall furnish a sufficient number of competent and qualified inspectors for that purpose as provided for in this act.
MCL 288.611