After bactericidal treatment, no utensil shall be stored except in a clean, dry place, protected from flies, dust or other contamination, and no utensils shall be handled except in such manner as to prevent contamination, so far as practicable. Single-service utensils shall be purchased only in sanitary containers, shall be stored therein, in a clean, dry place until used, and shall be handled in a sanitary manner. Spoons, spatulas, dippers, etc., used for dispensing frozen desserts shall, when not in use, be kept in clean, preferably running water. Drinking straws must be individually enclosed and served in an original wrapper. (Ord. 5212 § 1 (Exh. C), 1999; 1957 code § 4.02.220.)