Oregon Revised Statutes Agriculture § 570.425

(1) The control area inspector has access to the land within the control area that is within the county for which the inspector was appointed.

(2) In the event an owner or occupant of any land fails or refuses to treat the trees, plants or their produce as provided by the control area order, the inspector shall at once notify the appointing authority of such fact and they shall authorize the inspector and such assistants as the inspector may employ to go upon the land or premises and treat the trees, plants or their produce thereon. The most effective and practical method as approved by the Director of Agriculture shall be used.