The supply subsystem includes a replaceable exterminating liquid reservoir, {HEAD ~ an electrically driven pump} and switch means coupled to a source of {TAIL ~ electrical energy} to selectively energize the pump 
The supply subsystem includes a replaceable exterminating liquid reservoir , { HEAD ~ an electrically driven pump } and switch means coupled to a source of { TAIL ~ electrical energy } to selectively energize the pump
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH