Who knew dust could be so useful?

Well maybe not that dust.

Cimexa is a silicon dioxide dust insecticide designed to eradicate a wide variety of household pests, including bed bugs, flies, ticks, roaches, silverfish, termites, and a ton more.

Cimexa is also worthy of an exclusive review as its effects are claimed to last up to 10 years, if left undisturbed.

So what makes Cimexa a great choice for killing household pests?

  • Promises 100% elimination of bed bugs
  • Work three times faster that most insecticides
  • Remains viable for up to 10 years
  • Doesn’t have to be eaten by insects to work
  • Can stick to hands causing dryness and irritation in eyes
  • Higher price point than some competitors

CimeXa is an insecticide powder made up of 100% silica dust used for the eradication of various house pests.

CimeXa is similar to, but not, diatomaceous earth. The amorphous silica gel formula has been engineered to provide maximum results.

It contains some similar properties of diatomaceous earth, along with a few compositional upgrades making it a better alternative for pest control.

CimeXa has been proven to be a better bed bug killer than diatomaceous earth.

Cimexa is claimed to kill bed bugs three times faster than competing formulas, thereby eliminating bed bugs’ chances of feeding and reproducing.

CimeXa even kills the bed bugs which are resistant to insecticide strains of pyrethroids and neonicotinoids.

Does Cimexa Dust Work?
Cimexa – an online pest control secret

A study carried out by researchers at the University of Sydney found CimeXa use led to a 100% mortality rate even if bed bugs were only partially or temporarily exposed. The same study also found that entire bed bug populations were eliminated by CimeXa after just 24 to 48 hours.


92.1% Silicon Dioxide (Amorphous Silica gel)


Rockwell Labs (Mfg. Number: CXID032)

Kills a Wide Range of Insects

  • Bed Bugs
  • Ants
  • Crazy Ants
  • Cockroaches
  • Fleas
  • Ticks
  • Beatles
  • Firebrats
  • Silverfish
  • Spiders
  • Mites
  • Lice
  • Moths
  • Drywood Termites

CimeXa is most well-known for its efficiency and action against bed bugs.

It can be used to combat pest presence in areas such as Residential, Commercial, Industrial Areas, Municipal, Agricultural, & Warehouses. 

Properties of Dust

CimeXa is a residual powder, meaning it sticks to bed bugs when they come in contact with it. It dissolves the waxy cuticle on the outer shells of bed bugs leading to dehydration and ultimately death.

CimeXa dust has a unbelievable residual effect of 10 years if the dust remains undisturbed after application.

CimeXa is a odorless and colorless dust. It can be easily stored in any place in the house without fear of absorbing water, except for in extremely humid conditions.

How To Apply CimeXa Dust

CimeXa can be used in a variety of ways in areas with visible signs of insects.

Powder Form:

The simplest way to use Cimexa is to sprinkle the dust in its original powder form, anywhere pest control is required.

In powder form, 2 ounces of Cimexa should be used for ever 100 square feet of space.

A power duster can be used to reach all corners, cracks, crevices, voids, attics and crawlspaces. A power duster also ensures the product is not wasted.

Solution Form:

Another way is to mix the dust with water and spray by using a hand-pumped sprayer.

For maximum results, 1 pound of CimeXa powder should be mixed with 1 gallon of clean water.

Use a plastic scoop to add the powdered dust to the water. Make sure the scoop is not used for any other purpose afterwards.

After adding the powdered dust to water in a plastic container, use a mixer attached to a drill for a finely blended solution. The solution can then be added to a sprayer.

Likewise, a thicker solution can be created by adding more powder to the water. The paste-like solution can then be painted onto desired areas using wall brushes.

A selling point is that the dust does not retain water and eventually evaporates, so there are no dampness concerns.

For this reason, it is advised not to leave any CimeXa solution idle in equipment or containers as it eventually turns into a gel and ultimately dries out.

About 1 quart of the CimeXa solution should be applied to every 250 square feet of area that has to be treated for bed bugs or other pests. The solution can also be injected into cracks and crevices.

Where to apply Cimexa: 

  • Joints and cracks of bed frame
  • Tufts, folds, and edges of mattress and cushions
  • Edges and interior of box spring
  • Behind headboards and under bedding
  • Around and behind picture frames or other wall hangings
  • In hollow furniture legs and empty drawers
  • In attics and crawl spaces
  • Along exterior doorways
  • Trash and utility closets
  • Along moldings, baseboards and ceilings
  • In-wall voids, cracks and crevices

Restrictions of CimeXa

CimeXa should not be used in areas where food is actively being handled and can be contaminated.

Working restaurants or food handling establishments should refrain from using CimeXa dust so that it doesn’t contaminate food. If used around food, CimeXa should only be used in the cracks and gaps of such areas and any product which spills out should be immediately cleaned up.

CimeXa is not recommended for use in exposed areas as inhaling it can cause breathing problems. Even if the dust has been used on exposed areas such as the living room or any floors then proper cleaning is required before anyone can inhabit it.

The dust can lead to dryness when it comes in contact with exposed skin. Therefore, proper handling gear, e.g. gloves, should be used while using CimeXa.

Similarly, the dust can cause irritation if it gets into your eyes, causing them to water. For instance, it is not recommended to add CimeXa over any infested carpet or clothing since it can be easily inhaled from there.

But Does It Work?

When it comes to pest control products, only one thing matters: does it kill insects?
While we wholeheartedly recommend Cimexa, the best indicator of its effectiveness might be the amount of reviews it has from users that claim to never write reviews. If a product can inspire such people to write a review, you know it’s something special.
Cimexa is a great low toxicity insect killer.
There is always a trade-off between using low toxicity insect killers and effectiveness. With Cimexa though, we didn’t feel like we were making the trade. While it’s low toxicity, it still is a highly powerful insect killer, and is worth your time and money.


Does it kill bed bugs eggs?

No, it doesn’t kill the eggs. However, when the bed bugs hatch, if they come into contact with the dust, it will kill them.

Is this safe to the touch?

Having used the dust many times, we can say we have definitely gotten some on my skin from time to time. We washed it off though and had no discomfort, rash or anything else. So in general, we would say it’s safe to touch and nothing to be alarmed about even if some does get on your skin. But should you be touching it?

Definitely not on purpose.  Of course, you shouldn’t let kids or pets have access to it. If you store it where they won’t have access, there is no need for concern that they might get some on themselves. Since water will both wash it away and render it harmless, even if some does get on you, it’s easy to clean it off and deactivate any of its effects.

How is this product different from diatomaceous earth?

DE works by “scratching/cutting” the cuticle that keeps moisture in their body. CimeXa is round particles that act like sponges to absorb moisture from their coating.

What’s the difference between this and boric acid? Do they do the same thing?

Boric acid has to be eaten by the bug in order for it to be effective. Bed bugs do not eat boric acid as they only eat blood. CimeXa insecticide does not have to be eaten by the bugs though as it dries out their endoskeleton when they walk through it.

Make sure that you wear a mask when applying in bulk.

Typically, Cimexa takes 24-48 hours to work. 

Are there advantages to using CimeXa Insecticide Dust versus the Alpine dust?

There are two main advantages.  Cimexa is 100% silica, which is basically ground up sand.  It is 100% natural and green. The other advantage is that in undisturbed areas CimeXa can last up to 10 years, whereas other dusts, including Alpine, will typically only last 1 or 2 years at the most.

Can CimeXa be used together with Diatomaceous Earth?

Yes, these two dust are completely compatible and can be mixed together to provide extra control.

Any doubts? Drop a comment below!