Question

Does freezing temperatures kill cockroaches?

Answer 1

Yes freezing temperatures do kill cockroaches.

If you have a house that has cockroaches in it you can shut the heat off and also the water and then allow the house to remain at freezing temperatures for a few months.

It takes prolonged cold temperatures to kill the cockroaches but it can work.

I once did this to a house I had rented out.

The house got cockroaches and the renters moved out.

I decided to leave the house cold during the sub freezing temperatures we had for a few months and during those few months all the cockroaches died.

You can also spray cockroaches with bleach or ammonia which will also kill cockroaches.

Or use some Raid Roach Spray which also kills the roaches.

Answer 2

Cockroaches do die in freezing temperatures.

Cockroaches can only survive temperatures above 15 F degrees before they die after being exposed to the 15 F or 0 F degrees for a prolonged period of time.

If you've tried other methods and still have a roach infestation then moving somewhere else for the entire winter and shutting the heat off to the home can kill the roaches.