Just so people are knowledgeable and not misinformed. Euthanasia solution is not battery acid. It is the same sedative that veterinarians use to anesthetize animals for surgical procedures at a more concentrated dose. It puts animals in an unconscious sleep state long before it stops the heart and respiratory systems. There is no pain or agony. If a vein cannot be used for IV, IP (abdominal), or IC (cardiac) injections are used. IC is almost instantly fatal and IP is quickly absorbed by mucus membranes and takes 10-15 mins max. This is done by veterinary clinics across the country not just shelters. It is a DEA controlled substance which has strict federal regulations and must only be used by a licensed veterinary professional or euthanasia technician. BTW it is more profitable for animals to be adopted to loving homes at $100 a piece than to spend the money to euthanize. Have a nice day.