Yes CO2 can kill you. Not because it is toxic but rather because it can lower the O2 content in the air around you. It is the gas we exhale when we breath out. If you take simple precautions like an open window or door to allow for ventilation, there is really no risk or danger to yourself or others. This is one of the reasons two reasons that it is such a good produce for this job.J I believe that CO2 works, it displaces the oxygen needed to survive and causes asphyxia. Not pretty but effective and relatively safe for you and yours. I have read claims that it produces a narcotic effect, drugging the critters before it kills them but, I think that this is wishful thinking to appease people’s conscious. I may be wrong and if someone has proof otherwise please state it. Oh, and opinion is not proof, sorry
Oh and the other reason is that it is a naturally occurring substance in the bodies of all living animals (Especially mice & snake in this case).
I just wanted to state the above because some people seem to be under the wrong idea that CO2 is some kind of dangerously deadly thing, kind of like all them snakes and lizards out there,
and it seems to me that one of the main purposes of this site is to dispel false info (also known in the world as BS).
Bruce