hey there, i breed ASF's as feeders for my snakes, as i primarily keep ball pythons.

i live in canada, and it is impossible to get dry ice up here and nowhere in my town sells paintball supplies.

i have heard that using those cans of compressed air (for cleaning out computers/computer keyboards, etc) produce c02? is it safe to put feeders in a sealed container and release some of the compressed air into the chamber to euthanize? compressed air, i think called Dust Off is readily available at walmart, but i just haven't heard much on weather or not it's actually safe to use to euthanize feeders. i don't want my snake ingesting anything that will have illeffects later.

please advise on weather this is safe.