A pest extermination system permanently installed in {HEAD ~ a building structure}, {TAIL ~ which building structure} includes adjoining walls and floors, said extermination system comprising: 
A pest extermination system permanently installed in { HEAD ~ a building structure } , { TAIL ~ which building structure } includes adjoining walls and floors , said extermination system comprising :
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH