Wyo. Stat. § 40-12-303: Automated sales calls.

(a) No telephone solicitor or merchant shall make or knowingly allow a telephonic sales call to be made if the call involves an automated system for the selection or dialing of telephone numbers or the playing of a recorded message when a connection is completed to a number called.

(b) Subsection (a) of this section does not prohibit the use of an automated telephone dialing system with live messages if:

(i) The calls are made or messages given solely in response to calls initiated by the persons to whom the automatic calls or live messages are directed;

(ii) The telephone numbers selected for automatic dialing have been screened to exclude any telephone subscriber who is included on the national do-not-call list and any unlisted telephone number; or

(iii) The call is to a consumer with whom the caller had an established business relationship.