The ARC has recently approved a new Policy on Rodent CO2 Euthanasia; the updated Policy is available at the Rodent CO2 Euthanasia web page.
This Policy describes important procedural requirements labs must follow in order to meet recommendations made in the 2013 AVMA Guidelines for the Euthanasia of Animals concerning the use of CO2.
Please contact the Office of Animal Research Oversight at 310-206-6308 or oaro@research.ucla.edu if you have any questions.