<< Get a five pound block of dry ice and put it in an open igloo style cooler. Roll up all windows, turn off all vents and close doors and hatch tight. When the dry ice sublimes, the levels of CO2 will be lethal to anything inside. This won't stink up the car like poisons. Works like a charm.
Cheers! >>
Hehe, so in addition to exterminating those suckers, he'd have to play hide and SEEK with those bad boys? And within a short period of time, before they start to decompose 😛