Wyo. Stat. § 37-13-123: Proceeds of sale.

The proceeds of the sale of any property for nonpayment of special assessments shall be applied in the discharge of the assessments, the interest, costs and penalties thereon. If there are outstanding any special improvement bonds issued pursuant to the improvement in question, proceeds of the sale shall, after the payment therefrom of the costs of collection, be applied to the cost of redemption prior to maturity of as many of the outstanding special improvement bonds as can be retired with the amount available.