It is another object of {TAIL ~ my invention} to provide a pest extermination system which is permanently installed in {HEAD ~ a building structure} 
It is another object of { TAIL ~ my invention } to provide a pest extermination system which is permanently installed in { HEAD ~ a building structure }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD