Someone told me that I could use CO2 from paintball canisters to humanely kill rodents for snake food. Now, I thought this was the perfect way... easy and will make the rats just fall asleep. How would you get the CO2 from the canister out so it will just leak out and fill the air slowly, that is how your supposed to do it right? My brother says that he doesn’t think that you can get the CO2 out like that and if you poke a whole in it, it will just blow up. Can someone please let me know how please? And if this would work? Thanks!