Who Sells Diatomaceous Earth? Unveiling the Supply Chain and Its Applications

Diatomaceous earth (DE), a naturally occurring siliceous sedimentary rock, is sold by a diverse range of retailers, from agricultural supply stores and garden centers to online marketplaces and pet supply shops. This widespread availability reflects the material’s versatility and applications in various sectors, including agriculture, pest control, and human and animal health.

Understanding Diatomaceous Earth

Diatomaceous earth is composed of the fossilized remains of diatoms, a type of hard-shelled algae. These microscopic shells are primarily made of silica, which gives DE its abrasive and absorbent properties. Crucially, it’s the amorphous silica that makes DE useful. Crystalline silica, a different form, can be harmful if inhaled. There are two main grades of DE: food grade and filter grade. Food grade DE is safe for human and animal consumption, while filter grade is used in industrial applications and is not safe to ingest. Misunderstanding the type of DE is crucial for proper and safe usage.

The Two Primary Grades: Food Grade vs. Filter Grade

Food grade DE is typically used as an insecticide, dewormer for livestock, and even as a food additive to improve the flow of powdered foods. It is registered for these uses with appropriate regulatory bodies. Filter grade DE, on the other hand, is used in swimming pool filters, water treatment plants, and industrial processes. Its crystalline silica content is much higher, rendering it unsuitable and unsafe for ingestion. Always verify the type of DE before purchasing and using it.

Retailers and Suppliers of Diatomaceous Earth

The specific retailers selling DE depend largely on the target application. Here’s a breakdown of the common sources:

• Agricultural Supply Stores: These often stock food grade DE in bulk for use as a natural insecticide and livestock supplement. Brands like Perma-Guard and DiatomaceousEarth.com are commonly found here.
• Garden Centers: Primarily offer food grade DE for pest control in gardens, particularly against slugs, aphids, and other crawling insects. Smaller bag sizes are typical.
• Online Marketplaces (Amazon, eBay, etc.): A vast selection of both food grade and filter grade DE is available online, offered by numerous brands and independent sellers. Exercise caution to ensure you’re purchasing from a reputable source and that the product is appropriately labeled.
• Pet Supply Stores: Sometimes carry food grade DE marketed as a natural dewormer for pets. Dosage recommendations must be carefully followed and ideally, consulted with a veterinarian.
• Pool Supply Stores: Almost exclusively sell filter grade DE for use in swimming pool filtration systems. This grade should never be used for human or animal consumption.
• Specialty Health Food Stores: May carry food grade DE as a dietary supplement, though its efficacy as a general health booster is debated and lacks strong scientific evidence.
• Industrial Suppliers: Offer filter grade DE in large quantities for industrial filtration applications.

Identifying Reputable Sellers

When purchasing DE, prioritize reputable sellers. Look for vendors with clear labeling, detailed product information, and positive customer reviews. Check for certification or registration from relevant regulatory bodies (e.g., EPA registration for pesticide use). Avoid sellers offering vague or unsubstantiated health claims.

Frequently Asked Questions (FAQs) about Diatomaceous Earth

Here are some frequently asked questions related to purchasing and using diatomaceous earth:

1. Where can I buy food grade diatomaceous earth for pest control in my garden?

   Food grade DE for garden pest control is readily available at garden centers, nurseries, agricultural supply stores, and online retailers like Amazon. Look for products specifically labeled for garden use and ensure they are food grade.

2. How do I know if the diatomaceous earth I’m buying is truly food grade?

   Check the product label carefully. It should explicitly state “food grade” and ideally, list certifications from relevant organizations. Reputable brands will also provide detailed information about the DE’s composition and intended use. If in doubt, contact the manufacturer directly.

3. Can I use swimming pool filter grade diatomaceous earth to control pests in my home?

   Absolutely not. Filter grade DE contains a higher percentage of crystalline silica, which is harmful to inhale and can cause respiratory problems. It is not safe for use around humans or animals.

4. What are the potential health risks associated with using diatomaceous earth?

   The primary risk is inhalation of crystalline silica, which can lead to silicosis, a serious lung disease. This risk is greater with filter grade DE. Food grade DE poses a lower risk, but dust masks should still be worn during application to minimize inhalation of the fine powder.

5. Is diatomaceous earth safe for my pets?

   Food grade DE is generally considered safe for pets when used appropriately as a dewormer or flea treatment. However, it’s crucial to follow dosage recommendations carefully and consult with your veterinarian before use, especially for young, pregnant, or nursing animals. Avoid getting DE in your pet’s eyes or nose.

6. How much does diatomaceous earth typically cost?

   The cost varies depending on the grade, quantity, and brand. Food grade DE generally costs between $15 and $50 for a 5-10 pound bag. Filter grade DE is often sold in larger quantities and may be less expensive per pound.

7. Can I use diatomaceous earth to treat bed bugs?

   Yes, food grade DE can be effective against bed bugs. Apply a thin layer of DE to areas where bed bugs are likely to hide, such as cracks and crevices in furniture, along baseboards, and under mattresses. Repeat applications may be necessary. Remember to wear a mask during application.

8. Does diatomaceous earth expire or lose its effectiveness over time?

   Diatomaceous earth does not expire. However, it should be stored in a dry place to prevent it from clumping and becoming less effective.

9. What are some alternative uses for diatomaceous earth besides pest control?

   Besides pest control, food grade DE can be used as a livestock feed additive, a water filter aid (although filter grade is more common), and even as an ingredient in some skin care products (though patch testing is recommended).

10. Are there any environmental concerns associated with using diatomaceous earth?

    DE is a natural product and generally considered environmentally friendly. However, excessive dust can be harmful to beneficial insects like bees. Avoid applying DE directly to flowering plants or areas where bees are actively foraging.

11. How should I store diatomaceous earth properly?

    Store DE in a dry, airtight container to prevent it from absorbing moisture and clumping. Keep it out of reach of children and pets.

12. Where can I find more information about the safe and effective use of diatomaceous earth?

    Consult the product label for specific instructions and safety precautions. You can also find information from reputable sources such as university extension services, agricultural organizations, and government agencies like the EPA. Always prioritize information from trusted sources over anecdotal evidence found online.

Conclusion

Diatomaceous earth is a versatile natural product with a wide range of applications. Understanding the different grades, potential risks, and appropriate uses is crucial for safe and effective utilization. By purchasing from reputable sellers and following proper handling and application guidelines, you can harness the power of DE for various purposes. Always prioritize food grade DE when consumption or contact with humans and animals is possible, and be mindful of dust inhalation by wearing a mask during application.