|(a) Only electric files, drills, or machines specifically designed and manufactured for use in the professional nail industry may be used in any cosmetology establishment for performing manicure or pedicure services. Craft, hardware, and hobby tools cannot be used under any circumstances. (b) After each use, diamond, carbide, natural and metal bits shall be cleaned by either (1) using a brush; (2) using an ultrasonic cleaner; or (3) immersing the bit in acetone for 5 to 10 minutes. (c) Immediately after cleaning all visible debris, diamond, carbide, natural and metal bits shall be disinfected by complete immersion in an appropriate disinfectant between clients, then sterilized in accordance with this chapter. (d) Buffing bits and chamois shall be cleaned with soap and water at the end of every day of use in addition to being cleaned or replaced between clients.