For the purpose of making inspections and carrying out the provisions of this chapter and any rule and regulation made in pursuance of this chapter, the director or his or her authorized agents have free access at any reasonable hour to any nursery, heeling-in grounds, place of business, or other public or private premises, except dwelling quarters, where it may be necessary for them to go, or which it may be necessary for them to inspect in the performance of their duties. It is unlawful to deny access to the director or his or her authorized agents, or to thwart or hinder these inspections by misrepresenting or concealing facts or conditions.