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What Is Diatomaceous Earth?

Diatomaceous earth can be dusted on animals to remove external parasites from the coat.
Drinking water can be filtered with diatomaceous earth.
Cat litter containing diatomaceous earth.
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  • Written By: J. S. Petersen
  • Edited By: Niki Foster
  • Last Modified Date: 14 April 2014
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While science fiction authors might suggest that fossils are best used to clone dinosaurs, diatomaceous earth shows us that fossils have a great number of uses in day to day living. Diatoms are tiny, single-celled algae found in plankton. Diatomaceous earth is a fine, white, crystalline powder made up of the fossilized shells of diatoms. Lightweight, gritty, and porous, it finds a surprising array of uses.

Most people are likely to associate diatomaceous earth with its use in swimming pool filters. The structure of the fossilized diatoms resemble small sponges with many openings. With so many places for particles to become stuck, it makes excellent filter material. Besides swimming pools, diatomaceous earth can be used to filter drinking water, beer, and syrup. Chemists also use it to filter particles out of liquids.

The gritty nature of diatomaceous earth makes it useful as a polish. It is non-toxic, so it can be used as an ingredient in toothpaste, or to clean metal products, even those used with food. It is a naturally occurring mineral with a very low environmental effect, and it's safe to use around people and animals. Even though it is non-toxic, people should never attempt to treat themselves with diatomaceous earth, either externally or internally. Medical professionals use a special medical grade in cases in which it is used on patients.

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The abrasive quality of diatomaceous earth also makes it a safe yet effective insecticide. It scrapes the protective outer shell off of insects. Without this protective layer, the insects quickly dry up and die. The substance can be used to remove external parasites from people and animals, and can be spread on crops to kill insects without dangerous chemicals. Some farmers even add a very small amount to their livestock's feed to control internal parasites.

Diatomaceous earth's high porosity makes it very absorbent. Liquid is quickly absorbed and trapped by all the tiny pores in the diatom's shells. This absorbency makes it a key ingredient in some brands of cat litter. It is also used to clean up spills, especially of dangerous or toxic chemicals. When the chemical is completely absorbed, it is prevented from spreading and can be more easily removed.

Truly an under-appreciated substance, diatomaceous earth performs a wide variety of tasks. It already acts as a safe insecticide, an efficient filter, and a spill cleaner. Who knows what other uses people might find for these humble fossils.

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Discuss this Article

anon129178
Post 17

Can you use diatomaceous earth to control varoa mites in bee hives without harming the bees?

anon102879
Post 16

What is Diatomaceous earth made out of? E.g. elements or minerals?

anon86837
Post 13

I see that it gets rid of all sorts of insects. But I need to know if this product works to fight against stinkbug infestation. If so, which one of these do I purchase?

anon86782
Post 12

I have 24 pounds of Aqua chem DE media and Filter aid Pure Diatomaceaus earth. Can I mix it with water and spray it on my pasture to get rid of the many ticks that get on my horses (2)? Ed.

anon80732
Post 11

how can we use it in silicone rubber?

anon42903
Post 10

Can this be used as a deterrent to pack rats that keep getting inside a car engine?

anon42150
Post 9

for - anon28777 , the person that mentioned they wanted to use the left over pool DE for home use. Do not use it! It's processed and the composition has been altered. It's honestly not good for the pool either. I'd recommend just disposing of it through your nearest facility in the safest way possible. As this is not the same chemical free safe DE that is considered food grade. Hope this helps.

anon41572
Post 8

Diatomaceous earth is non-toxic. Unless of course you ingest or inhale vast quantities of it. Farmers in the know use it considerably and have very healthy and pest-free animals and crops.

There are no 'fibers' present, only roughly contoured particles. These particles are excellent for killing roaches/ants/flies! A very light dusting on obvious areas and corners will rid you of infestations even so severe the bugs swarm in large numbers. Takes time, as eggs already laid must hatch so the new insects become dehydrated.

Can be taken internally by humans and animals. Small animals like cats and small dogs 1tsp a day, larger dogs 1tbsp a day, horses and cattle 1/2 to 1cup a day. Always for one week, then if no allergic or other reactions, continue for 30 days or as long as 90 days.

I've seen dogs and cats with worms cured more than one time. Also seen a horribly cockroach infested farmhouse cleared in two weeks, not a single one left after a month.

Again, non-toxic. No chemicals. It works because the particles are so rough, they scratch insects' shells and they dry out. Fleas, roaches, ants, silverfish and flies. Works. Guaranteed.

Inhalation can cause light bleeding in the lungs, so spread a fine mist around problem areas while wearing a painting or sanding mask and *keep out of eyes*. It will dehydrate your eyes severely!

Can be taken internally to cleanse colon. No more than 1tbsp daily before each meal. Take a very small amount with meals first several days to make sure you won't have any reactions. If taking internally use only food grade which is pure white.

anon36357
Post 7

How much do I give dogs and puppies and cats as worming them?

anon28777
Post 6

I used a d.e. pool filter at one time, but we switched to a sand filter and now have a case of d.e. leftover. I have read that it is good for insect control in the house and yard, but also read that d.e. for pool ue has been treated and can be dangerous to human and animal health.

I would love to use a 'natural' chemical for insect control but don't want to hurt the kids and cat. How can I know if this is safe to use in my yard?

anon26660
Post 5

is ok for grass or front yard?

anon20842
Post 4

Can I use this as a natural wormer for poultry, dogs and cats? We do eat the eggs and raise chicken to butcher so we want an all natural wormer that is safe.

logo989
Post 3

How did the Diatoms get their names and is it harmful to pests?

ehampton55
Post 1

i used diatommaceous earth in my swimming pool filter by mistake. i should have used sand. now it is on the bottom of my pool.How will i get it out and is it dangerous because of the silica fibers?

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