(1) All equipment used for cultivation or harvesting of grapes in the grape insect pest quarantine areas must be thoroughly washed or steam cleaned to remove all soil and plant material prior to entry into the state of Washington. Such equipment shall be subject to inspection by authorized inspectors of the department.

(2) Any equipment found to be in violation of this cleaning requirement shall be subject to detention by the department until such equipment is thoroughly cleaned at the expense of the owner or shipper or provisions are made by the owner or shipper to transport the equipment directly out of the state.