Diatomaceous Earth (DE) is a fine powder made from fossilized remains of diatoms—microscopic algae that live in freshwater and saltwater. These remains are rich in silica, which contributes to DE’s use in natural pest control and garden soil conditioning. When properly sourced, food-grade DE can be part of a holistic toolkit for pets and livestock, particularly in managing parasites and pests without chemicals.
Food-Grade vs. Pool-Grade DE
- Food-grade DE is safe for animals when used correctly.
- Pool-grade DE is chemically treated and contains crystalline silica, which is dangerous if inhaled or ingested.
Only food-grade DE should ever be considered for pets.
DE for Fleas & External Parasites
Food-grade DE works by dehydrating pests—its microscopic sharp edges damage the insect’s exoskeleton, drying it from the outside in. It's chemical-free and physically effective.
How to Use:
- Lightly dust your dog’s coat—avoiding eyes, nose, and mouth.
- Treat carpets, furniture, bedding, and cracks in flooring.
- Wait at least 24 hours before vacuuming to allow fleas to dry out.
- Repeat monthly during peak flea seasons.
🛈 Learn more about flea prevention in this article.
DE for Internal Parasites
Some holistic pet parents use food-grade DE as a supplement to help with:
- Roundworms
- Pinworms
- Hookworms
- Whipworms
👉 It’s not effective against heartworms.
👉 Must be given for 30 days to disrupt the full parasite life cycle.
👉 Mix a small amount into food or water. Always consult your veterinarian before internal use.
Health-Related Mineral Content
DE contains minerals like:
- Silica
- Calcium
- Magnesium
- Trace minerals (e.g., gallium)
These may support:
- Joint and bone strength
- Skin and coat health
- Detox-like support
Some research in humans suggests DE may help remove heavy metals and oxidative stressors through binding and elimination. While promising, more research is needed to confirm benefits in dogs.
DE Use in Livestock & Poultry
In a 2011 study, hens fed a diet with 2% DE showed:
- Larger eggs
- Reduced internal and external parasites
- Greater overall weight gain
Mixing 1 cup of DE into 70 lbs of feed, or 2 tbsp into 3.5 gallons of water, is commonly used in farms during spring and fall detox cycles.
Precautions and Safety
⚠️ Use with caution:
- Never inhale DE—for humans or pets. Use masks when dusting.
- Only use food-grade DE.
- Avoid use near open wounds or prior to surgery due to its drying effects.
If your pet has respiratory sensitivity or existing health concerns, check with your holistic veterinarian first.
The Bottom Line
Diatomaceous Earth, when sourced and used responsibly, can be a natural and non-toxic addition to your holistic pet wellness routine. It’s a versatile powder that can support external pest control, offer mineral benefits, and may assist with internal detox and parasite cleansing—but only when used as food-grade and with professional guidance.
Disclaimer: This content is for educational purposes only and does not replace professional veterinary advice. Always consult your veterinarian before introducing new supplements or remedies to your pet’s care.
Angela Ardolino
Angela Ardolino, a certified cannabis and fungi clinician, brings over 20 years of expertise to the field of holistic pet wellness. As a graduate of the inaugural Medical Cannabis for Therapeutic Use program at the University of Vermont School of Medicine, she is a passionate advocate for safe, natural, and ethically-grown whole plant and fungi medicine tailored for pets.
Angela is the founder and formulator behind CBD Dog Health and MycoDog, two pioneering brands that prioritize pet health through carefully crafted Full Spectrum Hemp Extract CBD for dogs, cats, and horses, as well as wild-harvested, dual-extracted mushrooms and adaptogens.
Committed to the highest standards, Angela continues to educate and inspire pet parents through her popular podcast, Your Natural Dog, where she hosts experts to discuss holistic pet care, natural remedies, nutrition, and training. Follow Angela Ardolino on her website, Facebook, Instagram, TikTok, and YouTube to stay updated on her mission to educate and empower pet parents everywhere.