DE dust also known as fossil shell flour has many uses. DE dust is a natural product that isn't exactly earth. It is actually the fossilized remains of microscopic organisms called Diatoms.
So these organisms create a shell around them that later gets fossilized and these fossils are ground formed in to DE dust, which is 84% silicon dioxide or Silica. It has already been proven by science that silica is that one trace mineral that is essential for human life. This is why this wonderful natural substance can prove to be highly beneficial when ingested by pets and human beings.
# Pets - Added at a rate of 2% to pet food in the bag or bin. Prevents feed from bugs. Kills internal parasites without chemicals. Use as a flea powder. Dust animal's bedding, kills fleas, lice and mites.

# Livestock - Use as a feed additive. Stimulates metabolism and increases feed conversion. Prevents fly larvae from developing in manure. Lowers fly population.

# Poultry - Added to feed for chickens and turkeys, it makes shells harder, reduce odors, dries droppings quickly, reduces fly hatch.

Humans - Check with your medical professional for dosage. Can be mixed with water or juice.
Large Dog (retriever) - 1 tablespoon per day.
Small Dog (poodle) - 1 tsp per day.
Cat - 1 tsp per day.
Cow - 1/2 cup per day.
Calf - 1/4 cup per day.
Horse 1/2 cup per day.