Michigan Compiled Laws, Chapter 289. Pure Foods and Standards § 289.2111

Sec. 2111. (1) The director shall have free access at reasonable hours to any food establishment, including a vehicle used to transport or hold food, for the purpose of evaluating that food establishment or vehicle to determine if this act or rules promulgated under this act are being violated. The director may secure samples of any food, after paying or offering to pay for the samples, to determine if this act or rules promulgated under this act are being violated.

(2) The director may examine the records of the food establishment to obtain pertinent information about food, supplies, and equipment purchased, received, or used by, or persons employed by, the food establishment or location.

(3) The director may take photographs or copy records as part of an evaluation.If a food establishment identifies by written document or mark that a certain area or record contains visible trade secrets, the director shall identify any photographs of that area or copies of that record as being confidential and shall diligently protect the confidentiality.