(excerpt taken from http://foodgradede.com/
Fossil Shell Flour Customer Reported Uses
Humans – Check with your doctor about supplementation of Diatomaceous Earth.
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 chicken and turkey feed, it makes shells harder, reduce odour, dries droppings quickly, reduces fly hatch.
Household – In attics and walls as an insect barrier. Kills ants and roaches and other insects. Dust under and behind appliances as an insect preventative. Dust under box-spring, and on mattresses to eliminate bugs including bedbugs. On camping trips, dusting the ground where you intend to place your tent prevents ants and other unwanted pests from coming into the tent. In grain storage, one treatment will kill bugs.
Allows seeds to sprout after years in storage
Garden – Mix into soil for a soil conditioner. Will retain over 6 times its weight in moisture and will release it as the plants need it. It may also help with nematodes. On lawns, will retain moisture and prevent drought damage.
Suggested doses are customer reported. Diatomaceous Earth is sold only as an anti-caking agent and is recommended to be mixed in animal feed at the rate of 2% of the dry weight.
Humans – Check with your medical professional or online materials 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.