Mont. Code Ann. § 81-4-108

The proceeds of a sale under 81-4-107 must be used to defray the cost of collecting and selling the wire, and the balance, if any, must be placed by the county treasurer in a special fund and must be held subject to claim by any person establishing to the satisfaction of the board of county commissioners that the person was the lawful owner of the wire and entitled to the remaining proceeds of the sale. If a person does not claim the money within 1 year of the date of sale, the money must be deposited in the general fund of the county.