If gas chambers were so "humane" then why was this practice banned for the worst serial killers in America, yet it's "okay" to do it to our innocent pets which is senseless and cruel. These animals suffer horrendous terror losing bowel and bladder control due to fear, and often drown in their own vomit. Contrary to popular belief, is not humane. Sometimes these animals go in a coma - and are buried alive. One example was Andrea the cat-gassed TWICE,then thrown in the freezer - she woke up meowing in agony in the freezer. See http://www.dailymail.co.uk/news/article-2050819/Stray-cat-Andrea-survives-gas-chamber-Utah-animal-shelter-twice.html
Washington, DC – Congressman Jim Moran, Northern Virginia Democrat and co-chair of the Congressional Animal Protection Caucus, introduced a resolution, H. Res. 736, opposing the use of gas chambers to euthanize shelter animals. The resolution calls for states to alternatively use established injectable euthanasia drugs and ensure that appropriate training and certification in these methods is widely available. See: http://moran.house.gov/press-release/moran-introduces-resolution-opposing-euthanasia-animal-shelters
“Death by gas is long, terrifying and painful, and it is unconscionable that this tactic is still being used in this country,” said Debbie Marson, local animal protection advocate and volunteer for A Forever Home. “Lethal injection is more humane, more cost effective, and only takes seconds. Euthanasia, after all, means ‘good death.’ Death by gas chamber does not meet this definition.” “Animal gas chambers, used at shelters in 32 states to euthanize healthy, adoptable, homeless dogs and cats, are cruel and inhumane,” said Megan Mason of Take Action-Help Ban Animal Gas Chambers.
The Association of Shelter Veterinarians has stated, "...the use of carbon monoxide for individual or mass companion animal euthanasia in shelters is unacceptable due to significant humane, operational and safety concerns." Please read their document available online at: http://www.sheltervet.org/associations/4853/files/CO%20Position%20Statement.pdf
Further these tanks can leak that can damage employee health (leading to litigation) and is highly explosive. Many cats and dogs went in a coma and were buried alive, or put in the freezer, still alive.
Elderly and pregnant animals often require several gas chamber sessions due to reduced lung capacity-and many animals are thrown into a single chamber.
"The animal is in a warm or hot box, usually with other animals. They don't know what's going on. The hiss of the gas is going on inside. They get dizzy, and they panic," he said. Fights can break out, and animals' calls can be heard.
Today most private and city animal shelters euthanize animals with sodium pentobarbital, a controlled substance that is injected into one of a dog or cat's veins. Animals die in seconds, experts say, and without pain or suffering.
The American Humane Association (AHA), an animal- and child-welfare nonprofit, says that lethal injection is the only acceptable method for putting down dogs and cats.
Currently 13 states, including California, Florida, and New York, require animal shelters to perform death by injection, according to the AHA."
Death by heart stick (intracardiac injection) should also be banned-the needle doesn't always hit is target and the animal screams in agony and does not die right away, even if it does enter the heart. It's a horrible way to die. A poison-filled syringe is jabbed through an animal's chest wall. This method also causes excruciating pain."