Oregon Revised Statutes Agriculture § 570.165

Any notice required by ORS 570.140 to 570.165 must be delivered in person or sent by mail to the owner or person in charge of the infested or infected articles at the last-known place of address of the owner or person in charge. A notice mailed to the shipper or shippers of infested or infected articles at the return address on any such shipment of infested or infected articles is considered sufficient notice to the owner or owners thereof within the requirements of ORS 570.140 to 570.165.