Carbon monoxide euthanasia of dogs: chamber concentrations and comparative effects of automobile engine exhaust and carbon monoxide from a cylinder
Journal of the American Veterinary Medical Association 165(9): 853-855
Carbon monoxide (CO) produced by combustion in a gasoline engine was compared with CO in commercial cylinders for effectiveness and cost of euthanasia. Differences in effectiveness were considered negligible. Per animal operational costs were less for the gasoline engine method than for the method utilizing commercial cylinders. Initial equipment costs were higher for the gasoline engine than for the commercial cylinder method.