in regards to using CO2. i raise rats to feed to my snakes…. most grocers sell dry ice. one shoebox size rubbermaid container and a cup of water, and a large marble size chunk of dry ice will do the trick…. much easier that using vinegar and baking soda. also produces much more CO2 much faster. i euthanize on average, 2 dozen, in less than 30 seconds. it is a nearly instantaneous, and from what i have observed, painless. every time i have done it, the rats/mice/gerbils are completely “stopped” within 15 seconds. though i leave them in the gas for about 5 minutes for security sake.


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