It would be nearly impossible to deliver a regulated 20% replacement of atmosphere in the first blast and deliver an 80% replacement of atmosphere with the second.
You'd very likely get the 80% replacement first and animals that ARE stressed by the process.
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- Ssthisto
"My bum has been a bum for a very long time, but that doesn't mean I have to listen to what it says."
- Terry Pratchett, Fifth Elephant
"Soil. Species. Rivers. That's the death in your food. Agriculture is carnivorous; what it eats is ecosystems, and it swallows them whole."
- Lierre Keith, The Vegetarian Myth
Member 1603
i can't see why putting them in a sealed container would be any worse than using co2? slower yes but as they just drift off to unconciousness then die this doesn't cause any panice as long as the box isn't too overcrowded and has some shavings in the bottom. i did this by accident taking my pet babymice to a pet shop when i used to breed them as a kid and there were no marks or anything on any of them. and if they panic they damage each other. they were simply lying there dead???