In each slaughterhouse there shall be maintained a manure box of some nonabsorbent materials, with a tight-fitting cover and sewer connection. All receptacles used in the handling of meat or meat products or for blood entrails, offal or waste matter of any kind shall be of nonabsorbent materials, and when entrails, offal or waste matter are contained therein shall be kept tightly covered. The manure box and all receptacles shall be emptied and cleaned at the close of each day that a deposit is made therein, and from all yards, pens or compartments all deposits of matter shall be removed at the close of each day that the same are used. The floor of each room in the slaughterhouse shall be swept at the close of each day the room is used, and the floor and walls to the height of six feet from the floor of each room used for killing or dressing shall be flushed and all matter removed therefrom at the close of each day that the room is used. Each slaughterhouse shall be provided with sufficient wire screens for windows and doors to keep the house at all times free from flies and shall be provided with a sufficient number of receptacles for expectoration, which receptacles shall be cleaned and disinfected at least once in every 24 hours. Each slaughterhouse shall be provided with suitable, convenient and separate water closets for each sex, and also suitable and convenient sinks, each with running water for washing, in the proportion of one water closet and one sink for every 15 persons or fraction thereof employed. Each water closet compartment shall be thoroughly ventilated, and no water closet shall open into any room where animals are killed or the product thereof prepared or kept. No dog shall be allowed to run at large upon any premises or in any building used as a slaughterhouse. Each slaughterhouse must be kept at all times clean and wholesome, and the odors therefrom must be destroyed by some effective means and according to the best and most approved processes, and everything preceding, following and in connection with the slaughtering of animals and the preparation of the products thereof must be free from all offensive conditions or cause of detriment to the public health.