Cal. Civ. Code § 1812.97

(a) Every contract which has as its purpose the lease or rental of athletic facilities for instruction, training, or assistance in physical culture, body building, exercising, reducing, figure development, or any other related physical skill, or for baseball, football, tennis, basketball, gymnastics, track and field, hockey, ice skating, weightlifting, wrestling, or bicycling shall contain the following warning statement in 10-point bold type:
Warning: Use of steroids to increase strength or growth can cause serious health problems. Steroids can keep teenagers from growing to their full height; they can also cause heart disease, stroke, and damaged liver function. Men and women using steriods may develop fertility problems, personality changes, and acne. Men can also experience premature balding and development of breast tissue. These health hazards are in addition to the civil and criminal penalties for unauthorized sale, use, or exchange of anabolic steroids.
(b) Commencing June 1, 1990, the warning statement required pursuant to subdivision (a) shall be conspicuously posted in all athletic facilities in this state which have locker rooms. At least one warning statement shall be posted in every locker room of the athletic facility.
(c) As used in this section, “athletic facilities” includes a health studio regulated pursuant to Title 2.5 (commencing with Section 1812.80), a professional boxers’ training gymnasium, as defined in Section 18685 of the Business and Professions Code, any privately owned sports facility or stadium in this state which is open to the general public, and any publicly owned sports facility or stadium in this state, including facilities in institutions of higher learning and schools that include any or all grades 7 to 12, inclusive.
(d) As used in this section, “anabolic steroids” include, but are not limited to, the following:
1. (1) Dianabol (methandrostenelone).
2. (2) Winstrol (stabozalol).
3. (3) Maxibolin (ethyl estrenol).
4. (4) Durabolin (nandrolone phenpropionate).
5. (5) Deca-Durabolin (nandrolone decanote).
6. (6) Testosterone propionate.
7. (7) Pregnyl (chorionic gonadotropin).
8. (8) Anavar (toxandroprione).
(e) When an athletic facility seeks to renew an operating license, if it can be demonstrated by a preponderance of the evidence that an athletic facility has not posted the sign required pursuant to this section, the licensing agency may impose a fine in the amount of fifty dollars ($50) per day for each day that the violation occurred, as a condition of obtaining the license renewal.