All dry closets shall be kept clean and in a sanitary condition at all times. The night soil containers shall be emptied and cleaned and disinfected at least once a month and more frequently if in the opinion of the director of public health or his duly authorized agent this is necessary. The door of the closet shall not be allowed to remain open at any time, unless there is a self-closing fly screen door in addition to that required under the preceding section. No wash water, garbage, kitchen slop or other liquid wastes shall be emptied into the dry closet. Every dry closet shall be provided with a box of dry earth or powdered lime, enough of which shall be added each day to the night soil container to absorb the excess moisture and prevent odor. No night soil from any person suffering from typhoid fever or other serious bowel trouble shall be deposited in any dry closet without being previously disinfected in such manner as directed or approved by the director of public health, or his duly authorized agent. (Ord. 7806)