(1) Carpeting is prohibited in the working areas, dispensaries and restrooms of all salons, shops and schools licensed on or after November 19, 2004.

(a) Salons, shops and schools licensed prior to November 19, 2004 shall use appropriate, nonabsorbent floor covering.

(b) Upon alteration or remodeling of any working areas, dispensaries and restrooms, carpeted flooring must be removed and replaced with appropriate, nonabsorbent floor covering.

(2) Floors, walls, ceilings, doors, windows, screens, entrances and receptacles, including those in the restrooms, must be maintained in a clean, sanitary and safe condition at all times.