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  • Writer's pictureAndy Hemmer

Diatomaceous Earth for Fleas on Dogs

Updated: 3 days ago

Dog scratching from fleas

Fleas can be a persistent problem for dog owners, causing discomfort for our four-legged friends and stress for those trying to rid their homes of these pesky pests. While there are numerous chemical solutions available, many pet owners are seeking natural alternatives to protect their dogs from harmful substances. Diatomaceous earth (DE) has emerged as a popular choice for natural flea control safely and effectively.

Understanding Diatomaceous Earth

Bowl of Diatomaceous Earth

Food grade diatomaceous earth is a fine powder composed of the fossilized remains of single celled organisms called diatoms, microscopic algae with a high silica content. This natural substance has versatile applications and has gained recognition for its efficacy in pest control. When it comes to combating fleas, DE offers a non-toxic and environmentally friendly solution.

How Diatomaceous Earth Works to Kill Fleas

  1. Mechanical Action

  • DE works by physically disrupting the exoskeleton of fleas. The fine particles and sharp edges adhere to the flea's outer layer, creating microscopic cuts that lead to dehydration and ultimately death.

  • The abrasive action of DE is harmless to humans and pets with fur or feathers but deadly for insects with an exoskeleton.

        2. Dehydration

  • DE has a desiccating effect on fleas, absorbing the oils and fats from their exoskeletons. This leads to dehydration, causing the fleas to perish.

  • The dehydrating action is gradual, allowing for an effective yet non-toxic approach to control fleas.

How to Use Diatomaceous Earth for Fleas on Dogs

Check out these easy steps to follow, to ensure the battle is successful with flea and tick control!

  1. Choosing the Correct Diatomaceous Earth

  • Ensure that the diatomaceous earth you use is labeled as crawling insect control diatomaceous earth to guarantee its safety for pets.

  • Crawling Insect Control Diatomaceous Earth is free from additives and chemicals, making it a non-toxic option for use on and around cats and dogs.


        2. Applying Diatomaceous Earth to Your Dog

  • Apply a handful or two of Crawling Insect Control Diatomaceous Earth to the pet’s entire fur coat making sure to rub it down to the skin. Do this for a period for two weeks, every day.  Make sure not to miss the legs, belly, or hind quarters.

  • During this two week period take the product and apply in a light and visible coat to pet bedding indoors, flooring around the bedding, rugs, and upholstery.  Leave for the first week, clean, and then reapply for the next week in the same fashion. You may apply to carpets and hardwood floors as well.

  • Clean thoroughly indoors and see where you stand.  In most cases this eliminates the population of adult fleas and cuts off flea reproduction.  We do know diatomaceous earth will not kill flea eggs but rather the adult flea stage. So its best to vacuum your flooring to clean up any dead fleas and also flea eggs. Be sure to clean the inside your vacuum well to ensure no flea eggs hatch inside of it.


Diatomaceous earth stands out as a natural and safe solution for dog owners seeking to combat flea infestations without resorting to harsh chemicals. Understanding how DE works and applying it responsibly can help create a flea-free environment for your furry companion. By incorporating DE into your regular pet care routine, you can keep those troublesome fleas at bay, ensuring a happy and healthy life for your dog. Your canine companion will thank you for choosing a natural approach to flea control! Load up on diatomaceous earth, kill fleas, live peacefully.

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