S.D. Codified Laws § 37-2-11
No person may display any sign, label, or other designating mark which describes any lubricating oil or gasoline for internal combustion engines not actually sold or offered for sale or delivered at the location at which the sign, label, or other designating mark is displayed. No person may display any label upon any container which label names or describes any lubricating oil or gasoline for internal combustion engines not actually contained in the container, but offered for sale or sold as such lubricating oil or gasoline. This section does not apply to any person utilizing a sign in a decorative manner. No place of business may use a decorative sign in a manner that misleads a consumer as to the products sold at that location.
SDCL 37-2-11