All you need to know about using diatomaceous earth on your dog

Using diatomaceous earth on dog
Using diatomaceous earth on dog

Diatomaceous earth (DE) is a naturally occurring, soft, siliceous sedimentary rock that is easily crumbled into a fine white or off-white powder. It has gained popularity in recent years as an alternative to conventional flea control methods, particularly for pet owners of puppies in Sydney who prefer natural, chemical-free options.


If you are one of these types of owners, it’s important to be aware of how to properly use diatomaceous earth for flea control – simply buying the cheapest available thing online may end up harming your pet. 

Understanding Diatomaceous Earth

DE is composed of the fossilised remains of diatoms, a type of hard-shelled algae. The individual particles in diatomaceous earth are microscopic and sharp-edged, which allows it to function as a mechanical insecticide. 

When fleas and other insects come into contact with DE, the sharp particles pierce their exoskeletons, causing them to lose moisture and eventually die of dehydration.

Types of Diatomaceous Earth

It is essential to understand that there are two types of diatomaceous earth: food grade and non-food grade. Food grade DE is safe for human and pet consumption and is the type you should use for flea control. Non-food grade DE, typically used for industrial purposes, may contain harmful additives and should not be used on your pets or in your home.

Using Diatomaceous Earth on Your Dog

Before applying DE, ensure that your dog's coat is clean and dry. Remember to wear gloves and a dust mask to protect yourself from any potential inhalation or contact with the DE. While it’s safe, unnecessary exposure is still something you want to avoid.

Carefully apply a thin layer of food-grade diatomaceous earth to your dog's coat, taking care to avoid their eyes, nose, and mouth. As you apply the DE, gently massage it into your dog's fur, ensuring it reaches the skin for optimal effectiveness. Continue this process every few days until there are no longer any signs of fleas on your dog.

It's essential to remember that DE works best in a dry environment. Refrain from bathing your dog or allowing them to get wet during the treatment period. Since DE can be drying to the skin, consider applying a moisturising conditioner or oil to your dog's coat after treatment to prevent any potential skin irritation.

However, it's important to know that there are other methods of training and caring for your dog, such as in-home dog training. As outlined in this In-Home Dog Training Review, personalized training can be effective for busy pet owners and dogs with special needs.

Using Diatomaceous Earth on Your Dog's Belongings

To effectively control fleas on your dog's belongings, such as bedding, toys, and blankets, start by washing all items in hot water and detergent. This will help kill any existing fleas and eggs. After washing, make sure to dry the items thoroughly. Once they are dry, apply a thin layer of food-grade diatomaceous earth to the items, ensuring all surfaces are covered. Allow the DE to remain on the items for at least 48 hours to guarantee the elimination of any remaining fleas. After the waiting period, vacuum or shake off the excess DE and, if desired, launder the items again for added cleanliness.

Safety of Diatomaceous Earth for Dogs

When used correctly, food-grade diatomaceous earth is considered safe for dogs. However, there are some precautions you should take to ensure the safety of your pet:

  • Always use food-grade DE, not industrial-grade DE.
  • Avoid applying DE to your dog's face, particularly around their eyes, nose, and mouth.
  • Keep DE out of reach of your dog to prevent ingestion in large quantities, as it can be harmful if consumed in excessive amounts.
  • Be cautious if your dog has respiratory issues, as the fine particles of DE can be irritating to the lungs when inhaled.

However, it is essential to follow the proper application techniques and safety precautions to ensure the well-being of your dog. In addition to using DE, maintaining a clean environment and grooming your dog regularly can help prevent future flea infestations.

To further enhance the effectiveness of DE, consider incorporating other natural flea control methods, such as:

  • Flea-combing your dog daily to remove adult fleas, eggs, and larvae.
  • Using natural flea repellents, like lemon spray or essential oils (e.g., lavender, lemongrass, or cedarwood), on your dog's coat and belongings. Be sure to consult with your veterinarian to ensure the safety of these products for your dog.
  • Maintaining a clean outdoor environment by mowing the lawn regularly, removing piles of leaves or debris, and using nematodes to control flea populations in your yard.

If you continue to have issues with fleas or your dog exhibits signs of an allergic reaction to flea bites, consult with your veterinarian for additional treatment options. In some cases, they may recommend using prescription flea medications or treatments in conjunction with natural methods like DE to provide the best possible protection for your dog.


DE can be a valuable tool in the fight against fleas when used responsibly and in conjunction with other preventative measures. Always prioritise your dog's safety and consult with your veterinarian if you have concerns or questions about using DE or any other flea control methods.

1 comment

  • Dianne Gibson : July 25, 2023
    Author's avatar image

    Thanks for sharing this important information I was listening a dog owner but didn’t get all the information.
    Now that I have learned something new today and will


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