And the're busy chewing your engine harness on the firewall behind the engine because the heat wrap makes good nesting material, along with the hood insulation. The poison does attract then, then they die under your lower intake.... I've repaired a number of Z32 with these issues. Cotton pads soaked with peppermint oil, drier sheets(Bounce, etc) or mothballs are commonly tried to repel the beasts. I recommend baited traps under the car and a bi-weekly check of them.