Perma-Guard OMRI certified Diatomaceous earth is the purest food grade fresh water amorphous silica Diatomaceous earth available. Perma-Guard is derived from fossilized diatoms remains. Perma-Guard is OMRI certified food gra...

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Perma-Guard OMRI certified Diatomaceous earth is the purest food grade fresh water amorphous silica Diatomaceous earth available. Perma-Guard is derived from fossilized diatoms remains. Perma-Guard is OMRI certified food grade which allows it to be used on food crops through harvest & is safe for human consumption.

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