A trap device including {HEAD ~ at least one substance delivery element} for introducing {TAIL ~ a substance} therein is disclosed 
for introducing
A trap device including { HEAD ~ at least one substance delivery element } for introducing { TAIL ~ a substance } therein is disclosed
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH