The shape and materials of {TAIL ~ interior} 16 may reflect and direct the sanitizing agent onto {HEAD ~ the doorknob} 
The shape and materials of { TAIL ~ interior } 16 may reflect and direct the sanitizing agent onto { HEAD ~ the doorknob }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD