D.E. Diatomaceous Earth insecticide for food storage and to control parasites
An Australian paper:
Diatomaceous Earth Grain Protectants
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How Does it Work?
Research at the University of California, Los Angeles in the 70's disproved the commonly held belief that the abrasive nature of inert dust insecticides made them effective. This research showed that the mode of action was actually due to the ability of DE to absorb the insect's waxy cuticle. It is the disruption of this water-proofing layer on the insect's body that leads to rapid desiccation and eventual death. The insect should come in contact with DE particles for this to occur.
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I didn't know that. This is a very interesting paper, although unfortunately undated.
The bad news is that according to this paper, there really are many different kinds of D.E. with greatly varying effectiveness.
The wiki: http://en.wikipedia.org/wiki/Diatomaceous_earth
I've already seen the first red ants and little spiders and thought I'd give this stuff a try. Now I'll have to research varieties and prices. Appreciate any pointers.
It's quite cheap, especially in quantity:
I ordered 50 lbs and now read that it's supposed to have all kinds of great benefits when EATEN by people and animals.
http://www.earthworkshealth.com/human-use.php
If anyone knows of any negative effects, please let me know. My dog will definitely get it and I'll probably try it too.
It already was delivered on 3/17, they got my order on 3/11. Good service.
Order Summary
The duster works WELL!
I've been using it in the little addition, been spraying it into the walls before putting the fiberglass insulation over the windows.
It's such a thrill when something works as expected -- at least the application. I really hope to keep ants and spiders out.
I took a while to repackage the 50 lb bag. A bunch went into plastic containers in the kitchen and then I used some large freezer bags.
Finally I figured I had way plenty for food purpose and the rest went into two garbage bags for garage storage.
Should have enough for YEARS, just have to make sure it stays dry.
I had to label the kitchen containers to make sure I don't confuse it with flower. I tastes like "nothing."