Wis. Stat. § 961.69: Possession, use, manufacture, distribution, or advertisement of a masking agent.

(1) In this section, “masking agent” means any substance or device that is intended for use to defraud, circumvent, interfere with, or provide a substitute for a bodily fluid in conjunction with a lawfully administered drug test.

(2) No person may use, or possess with the primary intent to use, a masking agent. Any person who violates this subsection may be fined not more than $500 or imprisoned for not more than 30 days or both.

(3) No person may deliver, possess with intent to deliver, or manufacture with intent to deliver a masking agent. Any person who violates this subsection may be fined not more than $1,000 or imprisoned for not more than 90 days or both.

(4) No person may place on an Internet site or in any newspaper, magazine, handbill, or other publication any advertisement knowing that the purpose of the advertisement, in whole or in part, is to promote the sale of a masking agent. Any person who violates this subsection may be fined not more than $500 or imprisoned for not more than 30 days or both.