The apparatus may further include one or more sources of a sanitizing agent configured to direct {TAIL ~ the sanitizing agent} toward the point of {HEAD ~ contact surface} 
The apparatus may further include one or more sources of a sanitizing agent configured to direct { TAIL ~ the sanitizing agent } toward the point of { HEAD ~ contact surface }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD