In enclosed space production, the handler employer must ensure all of the following:
Enclosed space production areas are locations where agricultural plants are produced indoors, or in a structure covered (partially or completely) with a non-porous material. It must also be large enough for a person to enter. The term "handler employer" above includes any commercial pesticide handler employer and any agricultural employer who employs one or more handlers. A fumigant is any pesticide product that acts in a gaseous or vapor form.
Agricultural employers are responsible for ensuring the safety of workers and other people on the establishment. For fumigant applications in enclosed spaces, do not allow anyone into the enclosed space or any adjacent structure or area that cannot be sealed off. This restriction applies during the application and until the ventilation criteria are met (listed below). This does not apply to handlers who are trained, equipped, and involved with the application.
Ventilation must continue until any inhalation exposure level on the pesticide label is met. If no exposure level is listed on the label, ventilation must continue until after one of the following conditions is met:
After ventilation and label requirements are met, there are no post-application entry restrictions required for enclosed space fumigations.