Euthanasia of shelter animals by carbon monoxide in a gas chamber is an extremely unacceptable and inhumane method still being used across the United States.
Stuck in this well-lit chamber (sometimes with other animals), clawing to escape, screaming for help, biting at each other and gasping for their last breath, the animals die slowly, painfully, panicked and completely distressed.
The preferred method of euthanasia, which is quick and painless, is euthanasia by injection, whereby the animal loses consciousness quickly as opposed to gas chambers where it can take up to 40 minutes to die. Carbon monoxide is also a more expensive means of euthanasia than EBI.
Shelters across the United States that are still using carbon monoxide must cease and transition to EBI at once,