What Temperature Do Cockroaches Die At?

Are you surprised to see a cockroach survive a temperature you thought it couldn’t? And now wondering, ‘What temperature do cockroaches die at?’ It is very hard to get rid of cockroaches.

There is even a common myth that roaches can even live without their heads! What kind of insects are they? Although they can survive in warm and humid temperatures and have endured many extreme temperatures like other insects.

They are not immune to all temperatures. We will look at what temperature cockroaches die at and what else you need to know about cockroaches’ activity in this article. Read on.


What Temperature Do Cockroaches Die At?


What Type of Cockroach Will Survive Harsh Temperatures?

There are different species of cockroaches, and they all have different harsh temperature tolerance levels. The species that live in the wild with no protection against harsh temperatures will do better than other types. In fact, there is a rare bioluminescent cockroach that lives on a volcano in Ecuador. This cockroach species is likely to survive more heat temperatures than other ones.

The four common types of cockroaches (German, Brown-banded, American, and Oriental cockroaches) that live close to human habitats have also developed adaptations that help them survive harsh temperatures.


How Do Extreme Temperatures Affect Cockroaches?

Cockroaches prefer warm and humid environments, but if it gets too hot, they will not be able to function properly. All their body functions will be disrupted. They weaken and then die.

During extreme cold temperatures, cockroach activities are also reduced. They become less active and will stop reproducing. At this point, they are more interested in preserving their energy to survive the cold than anything else.


What Temperature Do Cockroaches Die At?

Cockroaches are persistent pests, but even they have their limits. If you want to kill a cockroach and prevent it from reproducing before killing it, go for a cold temperature below 45°F or 7°C. At this temperature, cockroaches are in a diapause state. When in a diapause state, development and reproduction slow down.

This temperature makes them inactive, but it will not kill them instantly; they have to be exposed to the temperature for around 24 hours before they die. A temperature of around 15°F or -9°C is what will kill them instantly. Cockroaches cannot survive heat temperatures if it is more than 15°F to 120°F (49°C). They will die from long exposure to this temperature.


How To Keep Cockroaches Out of Your House In Extreme Temperatures.

One of cockroaches’ survival mechanisms in harsh temperatures is to enter your house to stay. Your house gives them the warm and humid environment they need. Here is how to prevent them from entering your house during these times:

  1. Look around your house for possible places cockroaches can enter from and seal them up.
  2. Keep your garbage away from the house.
  3. Get rid of anything that could attract them to your house.
  4. Clean up your house after eating. Do not leave food crumbs or spilled pet food around so cockroaches will not find anything to eat if they get in.
  5. Do not leave your dishes overnight. Wash them after use.
  6. Clear out clusters in your basements, attic, etc. When you do this, you are getting rid of possible hiding spots for cockroaches, which will make your house unattractive to them.
  7. If you go outside, check yourself and what you are carrying before entering back into the house to be sure you are not carrying roaches inside.


Frequently Asked Questions

Q. Can Cockroaches Survive in the Refrigerator?

A. It depends. If they have been there for a short period, like 5 minutes, they will be able to survive it. But a temperature of 45°F will kill them after a while. Refrigerator temperatures are colder than that.

Q. Do cockroaches hate salt?

A. There is no proven evidence that cockroaches hate salt or that it can be used as a good repellent. But if you pour salt around, cockroaches will avoid walking through it. The reason is not known.

Q. Do roaches like the heat?

A. Yes, they do. They are most active during the summer period, reproducing and overfeeding.

Q. How Long Can a Cockroach Live Without Its Head?

A. Cockroaches can live without their heads for up to an hour. They can survive because they use the tiny holes found in their body segments to breathe, not their heads. They only die of thirst because they need their heads to drink water.


Read also: What Happens If You Touch A Cockroach



Cockroaches can survive almost anything but are not immune to harsh temperatures, contrary to what many people believe. They will die at very hot or very cold temperatures.

The common types of cockroach has developed good adaptations that have helped them survive harsh weather by entering your house to hide from harsh temperatures.

Use the tips I mentioned above to prevent them from hiding out and contaminating your house. If you have any questions, we are here to answer please drop a comment.


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