If the owner fails or neglects to direct the disposition of the screenings or cleanings within 10 days after the notice has been transmitted to him, the person in possession of the screenings or cleanings, at his option, may do one of the following:

1. (a) Cause the screenings or cleanings to be processed and return to the owner the value of the screenings or cleanings less the cost of handling.
2. (b) Destroy the screenings or cleanings. He is not liable to the owner for the destruction of such screenings or cleanings.