Humane way to euthanize rats?

[JohnNJ]

Anyone able to tell me the best way to set up a co2 chamber? I am planning on breeding my rats and trying to find a way to euthanize. Also a rough estimate of how much it will be to set this up

A small Co2 tank called a five pounder costs around $50 plus $14 to fill it. Plus or minus depending on your location. It will last months if you use it infrequently. I got mine at a place that sells and services fire extinguishers.

I just use a Sterilite tub for the chamber. Co2 is heavier than air so it stays on the bottom. It doesn't have to be air tight.

To the wack on the head or wall people - how do you deal with the blood? A blow to the head will make them bleed from the nose. A body slam might not produce blood but it's not quick or painless. They go into shock and even though they look dead they still feel.