This subchapter does not apply to fumigants used to control insects or other pests outside of buildings, or for spot fumigations, or restrictive treatments inside a building. During the ventilation period of a spot or restrictive fumigation, the premises shall not be occupied by anyone except the fumigator. A warning gas is recommended where the fumigant is comparatively odorless.
Okla. Admin. Code § 35:30-17-86