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Writer's pictureAndy Hemmer

What Bugs Does Diatomaceous Earth Kill

Updated: Nov 7


pile of diatomaceous earth

Food grade diatomaceous earth is a naturally occurring, soft, siliceous sedimentary rock that can be crumbled into a fine powder. It's made from the fossilized remains of tiny, aquatic organisms called diatoms. Over millions of years, these diatoms accumulated in the sediment of rivers, streams, lakes, and oceans. Today, diatomaceous earth is mined from these sedimentary deposits.



What Is Diatomaceous Earth?

diatomaceous earth spilling our of bag

Diatomaceous earth is composed primarily of silica (silicon dioxide), a natural substance that makes up about 26% of the Earth's crust by weight. The unique properties of DE make it an effective and versatile tool in ridding a pest problem. The sharp, microscopic edges of diatom particles can penetrate an insect exoskeleton, leading to dehydration and death. We are referring to food grade diatomaceous earth and not pool grade diatomaceous earth. That type of diatomaceous earth is meant for filtration purposes and nothing else. It contains large amounts of crystalline silica and is harmful to humans and animals that have long term exposure to it.



How Does Diatomaceous Earth Work to Kill Insects?


DE works to control pests by the product adhering its tiny, sharp edges to their exoskeletons. As the insects move, these particles create small cuts in their exoskeletons, leading to the loss of bodily fluids. DE also has desiccant properties, which means it absorbs moisture, further dehydrating the insects. This dual-action makes applying diatomaceous earth an effective and natural pest control solution without relying on harmful chemicals. Now, lets move on to what bugs that diatomaceous earth will kill.



What Bugs Does Diatomaceous Earth Kill


Diatomaceous earth is effective as a pest control method for a variety of insects, including:


  • Ants: DE disrupts their trails and can kill ants through dehydration.


  • Bed Bugs: Sprinkling DE on mattresses, bed frames, and surrounding areas can eliminate bed bug infestations.


  • Cockroaches: DE is lethal to cockroaches, disrupting their exoskeletons and causing dehydration.


  • Fleas: DE can be used in pet bedding and carpets to kill fleas and their larvae.


  • Ticks: Applying DE to areas where ticks are found can help control their population.


  • Beetles: DE can kill various types of beetles, including grain beetles and carpet beetles.


  • Silverfish: DE can eliminate silverfish by dehydrating them.


  • Spiders: DE can be used to reduce spider populations by making their environment inhospitable.


  • Earwigs: DE disrupts their exoskeletons, leading to their death.


  • Slugs and Snails: Though not insects, DE can also deter these pests from gardens.



Application Tips For Diatomaceous Earth


To effectively use diatomaceous earth for pest control, follow these tips:


  • Dry Application: Sprinkle a thin layer of DE in areas where insects are likely to travel or hide. This includes cracks, crevices, behind appliances, and along baseboards.


  • Wet Application: Mix DE with water and apply it as a spray. Once the water evaporates, the DE will remain effective.


  • Outdoor Use: Apply DE around the perimeter of your home, in gardens, and on plants to protect against insects.


  • Pet Care: For fleas and ticks, lightly dust your pets' fur with DE. Be careful to avoid their eyes and respiratory system as inhaling massive amounts of dust can cause shortness of breath like any other nuisance dust.


  • Bed Bug Treatment: Dust your mattress, box springs, bed frame, and surrounding areas with DE. Leave it for several days before vacuuming.


*Although this product is non-toxic, always be sure to wear a mask and wear eye protection. It's a dusty product and should be treated as a nuisance dust.*



Diatomaceous earth is a versatile, natural solution for controlling a wide range of insect pests. Its unique properties make it an effective alternative to chemical insecticides, offering a safe option for homes with children and pets. Whether you're dealing with ants, bed bugs, or garden pests, diatomaceous earth can be a valuable tool in your pest control arsenal. Embrace this natural remedy to keep your living spaces insect-free and safe.




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