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Diatomaceous Earth- Food Grade


What is Diatomaceous Earth?

Diatomaceous earth is a remarkable, all-natural product made from tiny fossilized water plants. Diatomaceous Earth is a naturally occurring siliceous sedimentary mineral compound from microscopic skeletal remains of unicellular algae-like plants called diatoms. These plants have been part of the earth's ecology since prehistoric times. It is believed that 30 million years ago the diatoms built up into deep, chalky deposits of diatomite. The diatoms are mined and ground up to render a powder that looks and feels like talcum powder to us. It is a mineral based pesticide. DE is approximately 3% magnesium, 33% silicon, 19% calcium, 5% sodium, 2% iron and many other trace minerals such as titanium, boron, manganese, copper and zirconium. Diatomaceous Earth is a natural (not calcined or flux calcined) compound. Diatomaceous Earth is a natural grade diatomite. However, the continual breathing of any dust should he absolutely avoided.

Pest Pistol is a great applicator for DE
and other powders Click here to go to Pest Pistol

Use the Garden Syringe Applicator for pinpoint application of
Diatomaceous Earth and water injections in plants, trees shrubs etc.

  • This DE is not the same thing as the DE used in swimming pool filters. Pool grade DE is Diatomaceous Earth produced for pool filters and it is treated with heat, causing the formerly amorphous silicon dioxide to assume crystalline form. Pool grade DE should never be used for pest control. Swimming pool DE ranges from 60% to 70% free silica!

How does it work?
To insects DE is a lethal dust with microscopic razor sharp edges. These sharp edges cut through the insect's protective covering drying it out and killing them when they are either dusted with DE or if it applied as a wettable powder spray. If they ingest the DE it will shred their insides.

  • Comes with complete instructions for use on insects, flea and lice control, bed bugs, grain storage, parasite control in animals (use in feed) and fly control.

What insects can DE be used for?
Diatomaceous Earth may be used as a barrier to control adult flea beetles, sawfly, coddling moth, twig borer, thrips, mites,  cockroach, slugs, snails and many other insects such as:
Aphids, thrips, earwigs, silverfish, ants, spider mites and many other insects. Can be used for bedbugs, cabbage root flies, carrot root flies, fleas, pillbugs, ticks  and is helpful in dealing with fungus gnats.
Indoor and Outdoor Application: Sprinkle a light layer of DE in areas where pests frequent, including under stoves, cabinets, sinks, garbage cans, window and door frames and sills,
entrance ways, sewer pipes and drains, and in cracks and crevices. Repeat treatment as needed.
Carpet Beetles: Thoroughly dust along baseboards, carpet edges, under furniture, carpet, and rugs, and in closets and shelving.
Bedbugs: Take apart bed and dust joints and channels. Dust any hollow tubing and the interior framework as well as the mattress and all cracks in the room. 
Fleas: Thoroughly dust carpets and pet's bedding and sleeping areas, as well as cracks and baseboards. It also can be rubbed into your pet's fur.
Flies: Thoroughly dust areas where flies frequent (walls, straw bedding, livestock pens). It also can be applied to livestock coat as an insect repellent/contact insecticide.
Fly Larva: Keeps fly larvae from developing in manure, which makes a significant reduction in the fly population.

Diatomaceous Earth - Experimental Feeding
of Codex Food-grade Diatomaceous Earth
to Zoo Animals

Richard Smith, Hallwood Inc., Animal Food Specialties, Grand Rapids, Michigan

A mixture of feed incorporating 2% diatomaceous earth was sent to three zoos for evaluation.  John Ball Park of Grand Rapids, Michigan; Brookfield Zoos of Chicago Illinois; and Buffalo Zoo of Buffalo, New York.  John Ball and Buffalo Zoos reported that their black bears on the special feed showed a better coat and clearer eyes.  The primates fed at the Brookfield Zoo displayed a pronounced improvement in both appearance and behavior.  Stool samples taken at all three zoos showed an absence of any internal parasites - adult or egg. Parasites in these animals were present prior to using the diatomaceous earth food mixture.

How is DE applied?
You can apply DE with a Pest Pistol
You can use any type of applicator like the ones in the picture on the upper right of the page. The cylinder with jar in the front is a single action type pump that disperse a fine cloud of DE on foliage. The small unit with the red cap is a "Pest Pistol" used to inject DE into cracks and crevices or as a fog in larger areas.  Compression sprayers can be used by making a thin slurry of DE and water. This method can you give precise coverage and when it dries the DE goes to work. A slurry can also be used as a "paint" on tree trunks to discourage insects and to give sunscald protection to the bark. A slurry paint may also be useful in deterring borers from laying eggs on bark. DE is compatible with Golden Harvest Natural Fertilizer and most other wettable powders or liquid fertilizers and pesticides.
If using a small lawn fertilizer spreader, mix equal parts of dry sand with DE for even flow.

Depending on what you are using it for the outdoors coverage with one lb will treat approximately 1,000 to 2,000 square feet. For indoors you will get more coverage as you don't want to apply it all over. Just concentrate your application to cracks, crevices, baseboards, openings for plumbing pipe access, behind and under appliances, window and door sills. Applying it inside of wall cavities will be permanent.

Are there any safety concerns with DE?
Yes, you must wear a dust mask when applying it as it can irritate the mucous membranes in the nose and mouth. Once the DE dust has settled it won't bother you.


This is 100% pure, food grade
Diatomaceous Earth!

Click here to order

DE can be used in greenhouses, homes, 
gardens and on all 
types of plants.

This product is untreated,
unheated, amorphous
agricultural food
grade freshwater DE
(not the DE used in
swimming pools)

Order Page:

 1 lb. bag is $ 4.00

2 lb. bag is $ 7.50


Diatomaceous Earth will not harm warm-blooded animals or earthworms
Earthworm farmers use it to treat their worm beds for parasites, fungus gnat larva etc. Earth worms are structurally different from insects in that they can actually digest particles of DE. The particles are then eliminated in their castings.


Order yours today!


Comes with complete instructions for use as barrier, dust, spray, slurry and for animal parasites


In an article on DE in COMMON SENSE PEST CONTROL QUARTERLY, published by BIRC, Volume III, Number 1, Winter 1987, the matter of safety is explored. 

“Both swimming pool grade and natural diatomaceous earth come from the same fossil sources but they are processed differently. The natural grades are mined, dried, ground, sled and bagged. The pool grade is chemically treated and partially melted and consequently contains crystalline silica which can be a respiratory hazard. Thus, IT IS IMPERATIVE THAT ONLY NATURAL DIATOMACEOUS EARTH BE USED FOR INSECT CONTROL. This non-crystalline silica is not a hazard as the human body apparently can dissolve it. “


 DISCLAIMER: Any food grade diatomaceous earth uses other than those approved by the EPA, FDA, or USDA are strictly based on what others reportedly have done. The information that follows is not intended as a substitute for a veterinarian’s advice, nor is it a substitute for your judgment. It is best if you inform yourself and make decisions based on what you learn.



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