Wyo. Stat. § 1-21-1004: Summons; service and return.

The summons shall state the cause of the complaint against the defendant, the time and place of trial and shall be served and returned as in other cases. Such service shall be not less than three (3) nor more than twelve (12) days before the day of trial set by the judge. The defendant shall not be required to file a written answer to the complaint as a condition of being allowed to participate fully in the trial.