Best food grade diatomaceous earth

Top pick: Harris Food Grade Diatomaceous Earth. It's 100% ground freshwater DE with no additives or fillers, and it's OMRI listed — the cleanest, most trustworthy label for everyday use around the house, garden and animals. The version with a powder duster is the same DE with a tool for puffing it into cracks and under appliances.

Who the others suit:

• Natures Wisdom 5 lb — the big tub for people treating a whole house or coop.
• Orku fossil shell flour — if you care about particle size (about 20 µm) and low crystalline silica.
• Lumino Home 9 oz / 1 lb jars — small, tidy amounts for a first try or kitchen use.
• G&DFarms and the bulk powder — buying by weight for feed or soil.

Whichever you choose, look for "food grade" and a freshwater source on the label, and wear a mask when you dust it.