(a) Except as specified under Chapter 9, Section 12(b), only dustless methods of cleaning shall be used, such as vacuum cleaning, wet cleaning, mopping with treated dust mops, or sweeping using a broom and dust-arresting compounds.
(b) Spills or drippage on floors that occur between normal floor cleaning times may be cleaned:
010-9 Wyo. Code R. § 9-12