Wyo. Stat. § 35-9-406: Abatement of nuisances.

Said board of county commissioners, upon receiving notice as aforesaid, or upon personal knowledge, shall have power to and are hereby authorized to abate any such nuisance at the expense of the person or persons, either by causing the same to be removed, or by filling up, or boarding around such excavations, as the case may be; provided, that said commissioners shall first notify the person or persons aforesaid, to abate such nuisances.