Thank you, Kim Schilling, for your clarifying the whys and hows of feeding mice. I didn't know what I started when I asked that simple question. I am moving to a house where a large aquarium was left behind. I can sell it or use it to raise mice, and humanely euthanize them with CO2 from dry ice (not CO) before feeding them. I'll start with pet store frozen mice first. Carol O. [Posted in FML issue 4215]