Perma-Guard™ Diatomaceous Earth, 5 lb
Perma-Guard™ Diatomaceous Earth Fossil Shell Flour Food Grade
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 and is safe for human consumption.