Wis. Stat. § 778.09: Judgment, costs, commitment of defendant.

Where judgment is recovered pursuant to this chapter it shall include costs and direct that if the judgment is not paid the defendant, if an individual, shall be imprisoned in the county jail for a specified time, not exceeding 6 months, or until otherwise discharged pursuant to law. The commitment shall issue, as in ordinary criminal actions, and the defendant shall not be entitled to the liberties of the jail.