Fleabusters vs Diatomaceous Earth

The main difference between Fleabusters and diatomaceous earth is the active ingredient. Fleabusters is a mixture of boric acid and diatomaceous earth, while diatomaceous earth is a naturally occurring substance made from the fossilized remains of microscopic algae.

Both Fleabusters and diatomaceous earth effectively kill fleas, but they work in different ways. Boric acid is a stomach poison, while diatomaceous earth works by dehydrating fleas.

Diatomaceous Vs Fleabusters Table

Take a quick look at this comparison table to easily understand the differences.


Diatomaceous Earth

Active ingredient is Orthoboric Acid

Active Ingredient is Silicon dioxide 88.25%

Specialize for Killing Fleas

Highly Absorptive Desiccant Dust

Odorless, Colorless and Has No Harsh Chemicals

Odorless, Non Staining and Remains Effective as Long as Not Disturb

Fleabusters RX has both federal and state EPA registration.

It meets U.S. Food Chemicals Codex standards and is listed for organic use by the OMRI.

It should be used on carpets, under couch cushions, under beds, and other furniture. It should be kept dry and moisture-free.

It is safe to use around children and pets due to its natural, chemical-free composition.

Fleabusters RX powder remains effective for up to one year

Diatomaceous Earth remains effective indefinitely as long as it's kept dry

Not Only Killing Flea but Also Larvae Too

Diatomaceous Earth Works on Adult Fleas and Eggs

Fleabusters Work by Attaching to the Larvae as They Walk Past and Then Drying Them Up

It kills Ants, Cockroaches, Earwigs, Fleas, Bed Bugs and almost all other crawling insects

One 3-Pound Canister Covers up to 900 Square Feet or 5 Rooms

Use Hand Duster or Bulbous Duster to Apply Light Coating of Dust to Areas

Active Ingredients

You’ll notice that Fleabusters and diatomaceous earth have different active ingredients, which can impact their effectiveness against fleas.

Fleabusters contain a proprietary mixture of boric acid and other ingredients, while diatomaceous earth comprises fossilized diatoms, which are microscopic algae.

The boric acid in Fleabusters works by dehydrating and killing fleas, while the diatomaceous earth kills fleas by damaging their exoskeletons.

Mechanism of Action

The way these products work to eliminate these pesky pests differs greatly. Fleabusters and diatomaceous earth have different mechanisms of action when getting rid of fleas.

Fleabusters is a powder that contains an insecticide called boric acid. When fleas come into contact with this powder, the boric acid dehydrates them and damages their exoskeleton, leading to their demise. This makes Fleabusters an effective long-term solution for removing fleas in carpets and other surfaces in your home.

On the other hand, diatomaceous earth physically damages fleas’ exoskeletons. The powder is made from the fossilized remains of diatoms, a type of algae. The microscopic sharp edges of the powder scratch the fleas’ exoskeleton, causing them to dehydrate and die.

Uses & Scope

DE is known for its versatility. Apart from pest control, it is utilized as a health supplement, a stain remover, a natural deodorizer, a cleaning booster, and a natural preservative for dry food storage. DE is effective against a broad spectrum of pests, including bed bugs and various garden pests.

In contrast, Fleabusters RX has a more focused use and is primarily developed for flea control. Its specific formulation allows it to adhere to carpet and furniture fibers for extended periods due to its static charge, effectively targeting flea larvae in these areas.

Source & Production

DE is a natural product derived from fossilized diatoms accumulated over millennia in freshwater lakes. Its production process is entirely US-based, from mining to packaging. It is certified by the Organic Minerals Review Institute, indicating its organic nature.

Fleabusters RX, conversely, is a product of scientific formulation. The statically-charged powder adheres to carpet and furniture fibers, aiding its effectiveness in flea control.

Application Conditions

For best results, make sure you apply diatomaceous earth in dry conditions. This is because the dust-like substance will lose its effectiveness when it comes into contact with moisture. Therefore, it’s important to wait until a dry day to apply it.

When applying fleabusters, following the instructions carefully ensures the best results. Fleabusters, including carpets, floors, and furniture, should be applied evenly and thoroughly to the affected area. It’s recommended to vacuum the area before and after using the product.

Safety Concern

To ensure your safety when handling flea treatments like Fleabusters and diatomaceous earth, it’s essential to wear gloves and a mask while applying them. Both products can be harmful if ingested or inhaled, so taking precautions is important.

Additionally, you should avoid applying these products in areas where pets or children may come into contact with them. Fleabusters contain boric acid, toxic if swallowed, and other chemicals that can cause skin irritation. On the other hand, diatomaceous earth is a natural substance of microscopic fossilized organisms that can cause respiratory issues if inhaled.

Both products should be used cautiously and only per the manufacturer’s instructions. By taking the proper safety measures, you can effectively eliminate fleas without putting yourself or your family at risk.

Residual Effect

After applying flea treatments, it can be frustrating to discover that they only last for a short time. The duration of effectiveness is an important factor to consider when choosing between Fleabusters and diatomaceous earth for fleas.

Fleabusters are known for lasting up to a year, while diatomaceous earth typically needs to be reapplied every few weeks. Fleabusters remains effective for up to a year, making it a popular choice for those looking for a long-lasting solution to their flea problem.

On the other hand, diatomaceous earth is a natural powder made from crushed fossilized algae. It effectively kills fleas, but its effects only last a few weeks, requiring frequent reapplication.


Fleabusters RX holds both federal and state EPA registration. DE is OMRI-listed for organic use and meets U.S. Food Chemicals Codex standards, demonstrating its suitability for food-grade applications.

Additional Features

Fleabusters RX features a neutral pH of 7.0, preventing flea larvae from being repelled and thereby enhancing its effectiveness.

DE, conversely, is a 100% pure product with no additives, retaining the full natural potency of freshwater diatomaceous earth.

Our Observation
Based on the presented information, Fleabusters RX for Fleas Plus Powder is the most effective product due to its multifaceted approach to flea control. Its ability to last up to a year provides long-term protection, and its application is user-friendly, requiring only light dusting over affected areas.

Furthermore, its neutral pH ensures that pests won’t be repelled, enhancing its effectiveness. Its safety for humans and pets also provides no harm to household members.

However, Diatomaceous Earth offers unique benefits, too. It is a multipurpose product with its applications extending beyond pest control. It is 100% organic, safe for human and pet consumption, and can also be used as a health supplement, stain remover, and natural deodorizer. It might be preferred for those seeking an all-in-one, natural solution.

The selection between these two products largely depends on the user’s specific needs. Fleabusters are more specialized and potent for flea control, while Diatomaceous Earth offers a broader range of applications, including but not limited to pest control.

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