Wis. Stat. § 254.12: Use or sale of lead-bearing paints.

(1) No person may apply lead-bearing paints:

(a) To any exposed surface on the inside of a dwelling;

(b) To the exposed surface of a structure used for the care of children; or

(c) To any fixture or other object placed in or upon any exposed surface of a dwelling and ordinarily accessible to children.

(2) No person may sell or transfer any fixture or other object intended to be placed upon any surface on the inside of a dwelling, containing a lead-bearing paint and ordinarily accessible to children.