Where to Buy Diatomaceous Earth? Your Comprehensive Guide
Diatomaceous Earth (DE), a versatile powder derived from the fossilized remains of diatoms (a type of algae), can be found in a variety of retail locations and online marketplaces, catering to diverse applications from pest control to food grade uses. Knowing where to reliably purchase high-quality DE is crucial for ensuring its effectiveness and safety.
Understanding Your Diatomaceous Earth Needs
Before diving into where to buy DE, it’s essential to understand the different types available and their intended uses. The two primary types are food grade DE and pool grade DE.
- Food Grade Diatomaceous Earth: Used for internal consumption in animals (and occasionally, humans) and for food storage to control pests. It’s crucial to choose a food-grade product if you intend to use it in these ways.
- Pool Grade Diatomaceous Earth: Primarily used as a filtration medium in swimming pool filters. This type is NOT safe for human or animal consumption and should never be ingested. It contains crystalline silica, a known carcinogen.
Therefore, carefully consider your needs before making a purchase. Improper use of DE can be harmful.
Top Retailers and Online Marketplaces
Several established retailers and online marketplaces offer a wide selection of diatomaceous earth products. Here’s a breakdown of your options:
Local Hardware Stores
Local hardware stores, such as Ace Hardware, True Value, and independently owned shops, often carry diatomaceous earth, especially those with a garden or agricultural section. They may offer both food-grade and pool-grade DE, so carefully check the product label. This is an advantage because you can visually inspect the product before purchasing.
Garden Supply Centers
Garden supply centers, including big box stores like Home Depot and Lowe’s, typically stock DE for pest control purposes. The availability of food-grade DE may vary, but they usually carry brands specifically labeled for garden use. Compare pricing and check reviews if available.
Pet Supply Stores
Pet supply stores, such as Petco and PetSmart, are reliable sources for food-grade diatomaceous earth intended for internal and external parasite control in pets. They often carry brands formulated specifically for animal consumption, ensuring proper safety and dosage information is readily available.
Online Retailers
Online retailers like Amazon, Walmart.com, and eBay provide the broadest selection of DE products. They often have competitive pricing and customer reviews that can help you make an informed decision. However, thoroughly vet the seller and product description to ensure you are buying the correct type and grade of DE.
Specialized Agricultural Suppliers
For bulk purchases or specific DE formulations, consider specialized agricultural suppliers. These suppliers often cater to farmers and livestock owners, providing larger quantities and expert advice on using DE for agricultural purposes. Search online for agricultural supply stores in your region.
Factors to Consider When Purchasing
When buying diatomaceous earth, keep these factors in mind:
- Intended Use: As previously mentioned, your intended use will determine the type of DE you need.
- Grade and Certification: Look for food-grade DE that is certified by organizations like OMRI (Organic Materials Review Institute) for use in organic gardening.
- Silica Content: Check the silica content, particularly for pool-grade DE, as it contains crystalline silica. Ensure you’re not accidentally purchasing pool grade for food-grade purposes.
- Price: Compare prices from different retailers to ensure you’re getting a fair deal. Be wary of extremely low prices, as they may indicate a lower quality product.
- Reviews: Read customer reviews to gauge the effectiveness and quality of the product.
- Seller Reputation: Buy from reputable sellers with a history of providing high-quality products and excellent customer service.
FAQs about Diatomaceous Earth
Here are some frequently asked questions about purchasing and using diatomaceous earth:
FAQ 1: How can I tell the difference between food-grade and pool-grade DE?
Look for the label. Food-grade DE will explicitly state “food grade” on the packaging. Pool-grade DE will often be labeled as “filter aid” or “for pool use only.” Never assume; always read the label carefully.
FAQ 2: Is it safe to buy DE online?
Buying DE online is generally safe if you purchase from reputable sellers with positive reviews. Carefully review the product description and seller information to ensure you are getting the correct type and grade of DE.
FAQ 3: What is the best brand of food-grade diatomaceous earth?
There isn’t a single “best” brand, as preferences vary. However, look for brands like Diatomix, Red Lake Earth, and Fossil Shell Flour. Read reviews and compare specifications before making a decision.
FAQ 4: How much does food-grade DE typically cost?
The cost of food-grade DE varies depending on the quantity and brand. Expect to pay anywhere from $20 to $50 for a 5-10 pound bag. Bulk purchases often offer lower prices per pound.
FAQ 5: Can I use DE that has been sitting in my garage for a long time?
Yes, as long as the DE has been stored in a dry place and hasn’t been contaminated, it should still be effective. DE doesn’t expire, but its effectiveness can be reduced if it absorbs moisture.
FAQ 6: Does DE kill all types of insects?
DE is effective against many insects with exoskeletons, such as ants, fleas, cockroaches, and bed bugs. However, it may not be effective against all types of insects, particularly those without exoskeletons.
FAQ 7: Can I use DE around my pets?
Yes, food-grade DE is generally safe for use around pets when applied according to instructions. It can be used topically to control fleas and ticks and can be added to their food in small amounts to control internal parasites (consult your veterinarian first). Avoid allowing pets to inhale the dust.
FAQ 8: How should I store diatomaceous earth?
Store DE in a dry, airtight container in a cool, dry place. This will prevent it from clumping and losing its effectiveness.
FAQ 9: What precautions should I take when handling DE?
While food-grade DE is considered safe, it can be irritating to the eyes and lungs. Wear a dust mask and safety glasses when handling it, especially when applying it in large quantities.
FAQ 10: Can I use DE in my garden?
Yes, food-grade DE is a safe and effective pest control option for gardens. Sprinkle it around plants to deter slugs, snails, and other pests. Reapply after rain.
FAQ 11: Where can I find more information on the proper use of DE?
Refer to the product label for specific instructions and dosage recommendations. You can also consult your veterinarian, agricultural extension office, or reputable online resources.
FAQ 12: Are there any alternatives to diatomaceous earth?
Yes, depending on the application, alternatives include chemical pesticides (use with caution), beneficial nematodes, insecticidal soaps, and biological control agents. Always weigh the pros and cons of each option.
By understanding the different types of diatomaceous earth, knowing where to buy it, and following safety precautions, you can effectively utilize this versatile product for a variety of applications. Always prioritize purchasing from reputable sources and carefully reading product labels to ensure you are getting the correct type and grade of DE for your specific needs.