Wis. Stat. § 553.78: Preemption.

This chapter shall not preempt the administration of ch. 96, 100, 125, 133, 168 or 218. False, fraudulent and deceptive practices in connection with the offer, purchase or sale of a franchise defined by rule of the division under s. 553.58 (1) may also constitute unfair methods of competition in business or unfair trade practices in business under s. 100.20 (1) or fraudulent advertising under s. 100.18.