(a) An appearance enhancement business shall be subject to reasonable inspection by representatives of the department at any reasonable time and without notice.

(b) A licensee shall cooperate with any inspection or investigation made by the department.

(c) Owners or area renters of any appearance enhancement business shall retain the invoices of all sterilants and disinfectants used in the shop for a period of two years. Evidence of such invoices must be available at the time of any inspection.