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Insect Dust Diatomaceous Earth - 4.4 lb

Item #: 50020-7

Our price: $16.95

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Insect Dust kills fleas, ants, cockroaches, bedbugs and all crawling insects around your home. Safe and effective, made from natural Diatomaceous Earth. This 4.4 pound bag treats 1,800 square feet. read more

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Our Price: $16.95


Use Insect Dust to eliminate crawling insects around your home. Our diatomaceous earth comes in the form of a chalky powder, and is the natural fossilized remains of diatoms, a type of hard-shelled algae. Diatom particles are very small and sharp – but only harmful to the small exoskeletons of insects. Insects cannot become immune to its action, as it is a mechanical killer – not a chemical one. Because it is a light dust, diatomaceous earth easily clings to the bodies of insects as they crawl over it. The tiny diatom particles then cut into the waxy coating of insects and they dry out and die of dehydration within 48 hours.

Food-Grade Diatomaceous Earth is an all-natural product that is so safe it can be sprinkled around your vegetable patch, or rubbed right into your dog's fur.

What Insects Does It Control?

  • Fleas
  • Ants
  • Ticks
  • Silverfish
  • Cockroaches
  • Bed bugs
  • Carpet beetles
  • Spiders
  • Earwigs
  • Spider mites
  • House flies
  • Slugs and snails

For Indoor Use:

Lightly coat a thin layer in areas where insects are found or may hide, such as kitchen cupboards, behind and under appliances, baseboards or drain pipes. For carpets, lightly sprinkle the Insect Dust over the carpet, and leave for 2-3 days before vacuuming.

You can leave the dust in place until you no longer see any signs of insects in that area, at which point you can clean it up.


Thoroughly dust floor, carpets and bedding in and around pet's sleeping areas, as well as surrounding baseboards, cracks and crevices. Safe to use around your pets - it can be rubbed right into your dog's fur.


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. Use a turkey baster or duster to apply clouds of the dust over the affected area. Leave the dust for a few days. It is still safe to sleep in your bed even while the dust is present.


Lightly dust in and around kitchen and bathroom plumbing, along baseboards and wherever else silverfish are found.

Carpet Beetles

Dust along baseboards, carpet edges, under carpet, furniture and inside closets.

For Outdoor Use:

Lightly coat a thin layer of diatomaceous earth on areas where insects are found, such as patios, door frames, foundations, sewer pipes and drains. Apply as a barrier around plants, trees and garden beds. For best results, reapply the Insect Dust after heavy rainfall.


Thoroughly dust areas where flies frequent, such as livestock pens and kennels. It can be applied to livestock coat as an insect repellent/contact insecticide. DE can also be added to the food of pets and livestock. The DE helps as a de-worming agent for livestock, and it ends up in their dung. Flies lay eggs on the dung which hatch into maggots, which are then killed by the DE. This is an effective method for fly control, especially on farms and homesteads, and in outdoor areas where animals are present.

Fire Ants

Sprinkle diatomaceous earth directly on the ant mound, or mix with water to saturate the mound. It can also be sprinkled along ant trails. The ants will track the DE back to their nests where the colony will be exposed to its abrasive action.

Slugs and other garden pests

Apply as a barrier around plants and garden beds. Reapply after rain. Any diatomaceous earth that washes into soil will continue to benefit your garden, since it acts like vermiculite in retaining water for future slow release. Our diatomaceous earth is OMRI listed for organic use.

Diatomaceous earth will not harm worms or any of the beneficial microorganisms in the soil.

Lice control for chickens

Lice are a common scourge around chickens and can lower their vitality resulting in fewer eggs and disease. Set a "dusting box" of DE in the corner of the coop and chickens will continually apply themselves with DE. This will reduce or eliminate lice within a few days.

To purchase a dispenser tube, click here


This Food-Grade Diatomaceous Earth is uncalcined amorphous silica, which comes from natural freshwater deposits in the USA. The freshwater naturally occurring diatomaceous earth deposits that are designated Food Grade by the FDA have less than 1% crystalline silica. These deposits are primarily amorphous silica which is harmless when ingested and is commonly used in feed and food industries. Insect Dust is certified organic by the Organic Materials Review Institute.

Insect Dust is registered as an insecticide with the EPA, so it is required to have a generic health warning on the bag, despite its safety.

Environmental Health Coalition refers to Diatomaceous Earth as one of the least toxic insect controls on their "Home Safe Home" fact sheet about safe household cleaners and indoor pest control.

Professor Stuart Hill at McGill University describes Diatomaceous Earth as non-toxic and feeling like talc when you touch it. He says that if you are going to apply large quantities, you should wear a face mask to avoid inhaling it. However, he mentions that inhaling common road dust is probably more harmful than inhaling Diatomaceous Earth.

Please note that food-grade diatomaceous earth should not be confused with "pool grade" diatomaceous earth. Diatomaceous earth used in pool or water filtration contains DE that has been chemically treated and heated making the silica crystalline which is a dangerous respiratory hazard and harmful to the health of humans and animals.

Read our article Diatomaceous Earth: Non-toxic Pest Control for Your Home and Garden to learn more.

100% Satisfaction Guarantee

We want you to be completely satisfied with every purchase you make. If you are in any way dissatisfied with a product you ordered, we'll exchange it, replace it or refund your money within 30 days of purchase. Simply email us the problem, and we'll take care of you. Certain products have extended warranties (up to 50 years!) that are listed on the particular product page. Please call us at 1-888-451-6752 if you need further clarification.

Additional Information

Weight 4.4 pounds
Coverage 1800 square feet
Key Feature Safe, non-toxic diatomaceous earth for crawling insect control
Origin Made in the U.S.A.

Shipping Information

Shipping Details:
Insured against damage or loss while in transit
This Product Ships To:
US Lower 48
Ships Via:
Fedex, UPS, or USPS

Questions about the Insect Dust Diatomaceous Earth - 4.4 lb

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  • From Debbie at 6/21/10 5:03 PM
    • I am interested in your product Diatomaceous Earth. I have a 15 year old cat who has very sensitive skin. Is this product safe to be used on her? Are there any side effects that I should be concerned with?
    • You can use this product on a 15 year old cat with sensitive skin with no side effects. It is totally safe. The only caution would be to try to avoid getting it in your cat's eyes, as they would be irritated.

      As this product is food grade, you can even mix it in with your pet's food to help treat parasites if they have them.
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  • From Tom at 7/11/10 10:35 AM
    • If I use this around my garden how long will it last before reapplication is needed? I assume that rain will wash it away and require another application.
    • Diatomaceous Earth will be less effective when wet, but it will dry out after getting wet and resume effectiveness. After prolonged rain, it is recommended to reapply Diatomaceous Earth in problem areas.
    • Do you find this question helpful?  Yes  No
  • From Dori at 7/11/10 8:03 PM
    • I was wondering if I have to sprinkle DE on the carpet after everytime I vaccum??
    • Yes, if you have a persistent insect pest problem that requires full carpet coverage, you will need to reapply Diatomaceous Earth. This may apply for homes with pets which play outdoors often. In our home, we apply Diatomaceous Earth in teaspoon-size piles in corners and out of sight areas where bugs may frequent. This has been very effective. When vacuuming, we steer around the little piles of Diatomaceous Earth to avoid sucking them up.
    • Do you find this question helpful?  Yes  No
  • From ellis at 7/13/10 8:40 AM
    • I researched diatomaceous earth in the dictionary and it is not clear to me what exactly it does to insects--how does it remove insects or keep them away. Also, how is diatomaceous earth effective in or around a compost bin? I do volunteer composting in a community garden in the city.

    • Diatomaceous Earth is the microscopic skeletal remains of diatoms which is a naturally abrasive material. To insects Diatomaceous Earth 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 Diatomaceous Earth or if it is applied as a wettable powder spray. If they ingest the Diatomaceous Earth it will shred their insides.

      Diatomaceous Earth is great for controlling insect pests inside the home, and it is also effective in the garden for pests in the vegetable beds. It has limited value around the compost bin, however, because insects do not usually interfere with the composting process.
    • Do you find this question helpful?  Yes  No
  • From Howard at 7/14/10 7:15 PM
    • I have a huge cockroach problem in my apartment - most infested area naturally being the kitchen, though we find them in our bathrooms and to a lesser degree the bedrooms. Do you really think DE would make a substantial impact in such a case? Would welcome you're best recommendations for applying it and so on, TKS very much.
    • Yes, diatomaceous earth will make a difference in controlling your cockroach problem. But it will take time if the population is well entrenched. Be sure to sprinkle DE in high places, like on top of the kitchen cabinets, as well as the places you see roaches frequent.
    • Do you find this question helpful?  Yes  No
  • From Aaron at 7/20/10 3:08 PM
    • I have a major roach infestation in my house. The roaches climb up the walls. How do I get around this problem?
    • Diatomaceous earth is effective for roaches, but it will take some time for you to see results if you have a large infestation. Even if you take other measures to control the roaches, keeping some Insect Dust sprinkled in areas throughout your home will help keep the population down over time.
    • Do you find this question helpful?  Yes  No
  • From L. Hannon at 8/3/10 8:11 AM
    • My cats have fleas. I have used advantage on them- and it seems to be working. Can I use this product on my cats even though they have been treated with advantage? Also- I only have carpet in one room- the rest is wood floors. I think the worse place is under my bed, but I can't move the bed. How can I treat under the bed? Thank You
    • Yes, you can apply diatomaceous earth to your cat's fur, or around the home, even though your cat has been treated with Advantage. In fact, it's a good idea to use DE as a secondary, and more lasting, preventive treatment against fleas.

      If you cannot move the bed, use a long spoon or any method to sprinkle DE in spots. In our home we sprinkle DE along the baseboards where no one can see it. When we vacuum, we try to avoid these spots. After a few weeks, we will vacuum more thoroughly and then reapply the DE in the same spots. Our home has been free of fleas and other insect pests for yers.
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  • From Paul at 8/30/10 6:55 AM
    • Is there a way of mixing this with water so it can be sprayed via a garden sprayer??? Paul in Fayetteville, N. C.
    • Diatomaceous earth is a fine powder and should be able to used as a spray, but we have not done this ourselves. For garden applications, we broadcast DE by hand. This way we can add more in trouble spots and not apply any to areas where it sin't needed.
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  • From Susan at 9/28/10 6:14 PM
    • How do I apply this to my dog for safe and effective flea control? Do I rub it all over his fur or do I put it on his skin? Is it effective if I just put it on the nape of his neck like the chemical flea medications? I am currently using Advantage which works, but it makes him smell bad and I don't feel good about putting poison on my dog.

      Also, I was wondering how often does this need to be reapplied for it to be effective?

      Thank you!
    • You can rub diatomaceous earth into your pet's fur, and sprinkle it around your pet's bedding. Reapply to the fur if your dog gets wet or if any flea activity is present.
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  • From Cathy at 9/29/10 5:42 PM
    • Does this package of diatomaceous earth have an expiration date?
    • Hi Cathy,
      Diatomaceous earth does not have an expiration date. DE is inert, the skeletal remains of diatoms, which have been around for millenia.
    • Do you find this question helpful?  Yes  No

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