Which is better for eating in food or drinks?

Orku is the safer pick on paper: it states FCC-consistent purity and under 1% crystalline silica. Natures Wisdom does not state its silica level or purity standard.

Orku states about 20 UM, a soft talc-like powder. Natures Wisdom does not publish a particle size, so you cannot compare fineness from the listing.

Is the Natures Wisdom tub worth it for the size?

A 5 lb tub lasts a long time for home pest use. But you must supply your own duster, and the powder's grade details are undocumented.

Diatomaceous earth does not expire when kept dry. The 5 lb Natures Wisdom tub simply holds more powder than the Orku pouch.

Can I use either in the garden organically?

Orku is OMRI listed as an input for organic production. Natures Wisdom makes no organic listing claim.

Which is better for mites on chickens?

Either works as a dry dust, but you need a duster. Natures Wisdom ships without one; Orku does not mention one either.

Orku Fine Diatomaceous Earth - Food Grade FCC Fossil Shell Flour Powder vs Natures Wisdom Food Grade Diatomaceous Earth 5 lb

Both are food-grade diatomaceous earth with low crystalline silica. Orku is milled to about 20 UM and states FCC-consistent purity and OMRI listing; Natures Wisdom sells in a 5 lb tub but ships without a duster. Buy Orku if you want a documented fine powder for food or organic use; buy Natures Wisdom if you just need a large tub and already own a duster.

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