At 06:20 -0800 Earth time on 050227 paula provolt sent:
Could someone refresh my memory about using dry ice for killing moths in all stages?
I'm sure it was this list which discussed it (Ron, was it you?)
I believe you put ice and fiber in air tight container, the ice takes the oxygen out of the air, and kills the moths? How long does this take? Any other suggestions?
Paula
Yes it was me.
First things first - do NOT put the dry ice in a closed container, especially a glass one. The solid carbon dioxide changes to gas carbon dioxide on warming, and the container will explode.
The carbon dioxide gas is more dense that air and will sink to the bottom of the container and force the air out. With no oxygen from the air the larvae, moths, any old insects, even eggs and pupae will die. The idea is to have a container that allows leaks at the top, but nowhere else. A plastic or metal container with a slightly loose-fitting lid is fine. A plastic bag with the opening closed, but not completely and at the top of the bag works too. Imagine the carbon dioxide gas a a liquid. If a liquid would leak out of the bottom of the container, so will the heavy carbon dioxide.
Handle to dry ice with gloves or a towel, and be sure the container has no leaks at the bottom and some small ones at the top.
The carbon dioxide is not a poison. It just pushes the air and its oxygen up and out. It takes some days for the insects to die. Be patient. Insects don't die easily.
Oh, don't do this in a basement room or any tightly sealed room. The carbon dioxide will displace air there too, and a person or pet in the room could die from lack of air. Not a probable possibility, but a possible one.
Ron Ron Parker - FiberNet list mom [EMAIL PROTECTED] For information http://hem.bredband.net/ronpar/fninfo.html
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