Quote Originally Posted by xdeus View Post
Well, that's not exactly true. CO2 in large concentrations will mix readily with the water of the mucous membranes and produce carbonic acid which can be quite painful. That's why it's advisable to start off with low concentrations when using a CO2 chamber and increasing the concentration after the the rats/mice are unconscious.
Good to know for the humane killing of feeders. However, the point was that the CO2 breathed in by the prey is not a toxin that is going to harm your snake. Would you agree?