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