[Tserisa]

Every snake I have owned has converted to a pre-killed diet easily. I have owned quite a few snakes.

I know very few snakes which have resisted the change to a pre-killed diet over the course of years, despite working as a volunteer at a reptile show which took animals to schools to teach compassion and conservation and belonging to a herp-keeper's association. Responsible owners keep trying, even after years. As someone mentioned -- persistence and patience!

CO2 is one of the accepted humane method of euthanasia by the AVMA for appropriate species (most mammals, including rats and mice). "Inhalation of CO2 at a concentration of 7.5% increases the pain threshold, and higher concentrations of CO2 have a rapid anesthetic effect" (AVMA Guidelines on Euthanasia, 7). There are accepted methods of using CO2, with compressed CO2 gas in cylinders (AVMA Guidelines, 8) that feeder animal companies like T-Rex adhere to.