Mont. Code Ann. § 7-32-2142

For the expense in taking and keeping possession of and preserving property under attachment, execution, or other process, the sheriff shall receive such sum as the court or judge may order, not to exceed the actual expense incurred. No keeper must receive to exceed $10 per day, and no keeper must be employed without an order of court or be so employed unless the property is of such character as to need the personal attention and supervision of a keeper. No property shall be placed in charge of a keeper if it can be safely and securely stored or where there is no reasonable danger of loss.