San Francisco County Municipal Code § 440.4 Sanitation

The floors, sidewalks, ceilings, furniture, receptacles, utensils, implements and machinery of every establishment or place where food is manufactured, packed, stored commercially in opened or unopened containers, sold or distributed shall at all times be kept in a healthful and in a sanitary condition, and for the purposes of this Section, unclean, unhealthful and unsanitary conditions shall be deemed to exist if food in the process of manufacture, preparation, packing, storing, sale or distribution is not securely protected from dust, dirt, rats, flies and other vermin, and, so far as may be possible, protected by any reasonable means from all other foreign or injurious contamination; and all refuse, dirt and waste products subject to putrefaction and fermentation incident to the manufacture, preparation, packing, storing, selling of and distribution of food, shall be removed once in each day; and all trucks, trays, trays, boxes, baskets and buckets and other receptacles, chutes, platforms, racks, tables, shelves, and all knives, saws, cleavers and other implements and machinery used in the moving, handling, cutting, chopping, mixing, canning and all other processes used in the preparation of food shall be thoroughly cleaned at least once in each day, and all operatives, employees, clerks and other persons therein employed or engaged shall maintain their persons and clothing in a clean and sanitary condition at all times and shall not store or keep unclean or soiled clothing or articles for personal use in or about said premises. (Added by Ord. 237-63; App. 9/6/63)