010-8 Wyo. Code R. § 8-52
(a) Except as specified under Chapter 8, Section 52(b), at least 1(one) handwashing sink, a number of handwashing sinks necessary for their convenient use by employees in areas specified under Chapter 8, Section 53, and not fewer than the number of handwashing sinks required by the International Plumbing Code shall be provided.
(b) If approved by the regulatory authority and capable of removing the types of soils encountered in the food operations involved, an automatic handwashing facility may be used by food employees to clean their hands.
(c) If approved by the regulatory authority, when food exposure is limited and handwashing sinks are not conveniently available, such as in some mobile or temporary establishments or at some vending machine locations, employees may use chemically treated towelettes for handwashing.
010-8 Wyo. Code R. § 8-52