Cockroaches
What temperature kills cockroaches?
A home thermostat will not cook a German cockroach population. They live next to heat: motors, dishwashers, and wall voids. Lethal high temperatures for insects require sustained heat in the harborage, which is a professional protocol, not “set the house to 90.” Winter indoor heat keeps them alive. Bait the crack.
Why freezing the apartment fails
People shut the heat in a vacant unit and expect a miracle. Appliances and south walls stay warm enough. Eggs are tougher than adults. You will still need sanitation and bait when you move back in. Do not use a space heater as an unlisted pesticide.
Species pages
The question is only the field note. Control sequence, legal notes, and identification live on the species article.
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