I made a small CO2 chamber to euthanize a baby chick. I mixed vinegar and baking soda in a plastic bag to create the co2….fed the gas into the container thru a hose and the chick quickly and quietly died, as described above.Euthanasia is not something I like doing, but I disklike watching a hen suffer even more. The 3 best options don't work for us - I don't know how or have the hand strength to wring a neck (and YES you should know how to do that first); I cannot decapitate - I already have predators that haunt my hens so the blood would only attract them even more; nor do I have a place to do that where my dog cannot get to the blood; I cannot shoot with a 22, I live within the city limits. We have vets in the area that would consider it - at about $400 to $500. I've got multiple hens, a dog and a cat, my vet budget is limited and I have to take that into account.
I read the above referenced article and several others as well. Here are my takeaways:
Our box works like this: We also tested it empty as much as possible to find the problems and the solutions.
- Get an appropriately sized, air-tight/watertight container - we chose a 25lb. pet food storage container. The top is affixed, it's translucent so I can make sure the bird is still by shining a light through from the other side. It could be drilled into and modified fairly easily.
- Use a CO2 tank - we purchased a 5lb capacity one and a regulator and tubing. We went to a brewing store and they supplied us with all the correct equipment that would work together. We can also get it refilled there for less than $25.
- Create a 'bleed' hole (toothpick size is sufficient) on the opposite side and end from the gas end to allow oxygen to escape as the CO2 is pumped in.
- Wait until after dark if possible and do it in a darkened space, this will keep the hen calm and quiet.
We just buried her this morning. I've had several folks who claimed they'd done it before and were willing to help put some ill hens down in the past and each time it went badly and my birds were put through trauma before they died. Never again. I have my solution and it worked out well.
- Laid container on it's back so the lid would lie flat on any surface
- Drilled small hole in the bottom of the container-ours has wheels and it's between the wheels at the back and I put in a two part 'hose barb' (1/4" Hose Barb Thru-Bulk Bulkhead Straight Hex Union Stainless Steel Fitting) into that hole and made sure it was siliconed to stop leakage of the gas. Hole was on the bottom because CO2 is heavier than air so it would be concentrated at the bottom.
- We had large binder clips that we also used to keep the top sealed around the edges as we found during testing that the pressure would make it leak the CO2. The clips stopped that.
- We attached everything and then I brought our girl out of the coop at dusk and into the darkened garage, put some toweling into the container and put her in with her head at the back of the container near the wall barb, closed the lid, put on the clips and let the gas in and put a flashlight on the opposite side of the box so I could see her movement stop.
- CO2 entered VERY lightly at first, she stopped moving within seconds. I took out the toothpick from the bleeding hole and turned the gas up a bit to flood the container. We let it run until empty - about 5-10 minutes. She died unconscious, no panic, no pain, just gone.
If you all want to attack me for this feel free, I did what I had to with the circumstances I have to deal with. If you want more info or photos of my gas chamber, reach out.