Cal. Business and Professions Code § 17531.5

It is unlawful for any person, firm, or corporation, in any newspaper, magazine, circular, form letter, or any open publication, published, distributed, or circulated in the State of California, including over the Internet, or on any billboard, card, label, or other advertising medium, or by means of any other advertising device, to advertise, call attention to, or give publicity to the sale of any merchandise, which merchandise is surplus materials as defined in the federal Surplus Property Act of 1944 (50 U.S.C. App. Sec. 1622 et seq.), unless there is conspicuously displayed directly in connection with the name and description of that merchandise and each specified article, unit, or part thereof, a direct and unequivocal statement, phrase, or word which will clearly indicate that the merchandise or each article, unit, or part thereof so advertised is or consists of surplus materials as defined in the federal Surplus Property Act of 1944.