Can roaches die in a hot car?
Similarly one may ask, can you kill cockroaches with heat?
Heat can be used to kill every type of cockroach and their eggs throughout the structure, even in places pesticidal fumigants, sprays, or dusts cannot reach. Additionally heat can kill bacteria and viruses.
In this manner, how hot is too hot for roaches?
They do not develop or reproduce when temperatures are too cold (below 45° F) or too hot (above 115° F). Hot and cold temperatures can be very effective in killing cockroaches, but the adverse temperatures must be maintained for a period of time.
The truth is, a cockroach can go a full week without its head, before it eventually dies of thirst. Losing its head will not cause a cockroach to suffocate. This is because cockroaches don't breath from their heads. They breathe through little holes in each body segment.