No building or enclosed space shall be occupied by human beings during the period of fumigation. It shall be the duty of the fumigator to make a careful examination of all parts of the buildings or enclosed space in order to verify that no human beings have remained therein and that all necessary precautions have been taken to safeguard the life and health of all persons occupying buildings adjoining that in which the fumigation is to be performed.
(1957 Rev. Ords., § 7.506; 1992 Code, § 31-3)