Do Ozone Generators Kill Bugs? 

If you’ve been battling persistent pest infestations in your home, you’ve probably tried a variety of methods to get rid of these uninvited guests. And in your search for an effective solution, you may have come across the term “ozone generators” or “ozone machines” and found yourself wondering, do ozone generators kill bugs?

In this blog post, we’ll answer this question and more on how ozone generators work, what bugs ozone machines will kill, and how to use them for pest control. 


What Are Ozone Generators?

Ozone generators are devices designed to produce ozone gas. Ozone, a molecule composed of three oxygen atoms, is a potent oxidizer that can destroy a wide range of organic and inorganic compounds. While ozone is naturally present in our atmosphere, these machines generate it in high concentrations that are intended for various applications.

Common Uses for Ozone Generators

Common uses for ozone generators include air purification, water treatment, and food sterilization. They’re used in homes and businesses to remove pollutants, odors, mold, and bacteria from the air. 

In water treatment, ozone generators can help eliminate bacteria, viruses, and other contaminants, making the water safer to drink. They’re also used in the food industry to extend shelf life by killing bacteria and other pathogens​.


Do Ozone Generators Kill Certain Bugs?

The short answer is yes, ozone generators do kill certain bugs. But their effectiveness can vary depending on the type of bug and the concentration/duration of ozone exposure.


Will Ozone Generators Kill Fleas?

Studies have suggested that ozone generators (machines) can be lethal to fleas, but there are a few things to note. Only high concentrations of ozone gas will kill fleas, and exposure must be prolonged. 

Because ozone at high concentrations can be harmful to humans and pets, it’s not the most practical solution for a flea problem. A professional pest control service or vet-approved flea treatments are generally a safer option​.


Will Ozone Generators Kill Bed Bugs?

Bed bugs are notoriously resilient pests that are difficult to eliminate. Ozone machines have been found to kill bed bugs, but similar to fleas, it requires high concentrations and prolonged exposure. Additionally, ozone may not reach all the hiding places of bed bugs, such as inside mattresses or in tiny crevices, reducing its effectiveness.


Will Ozone Generators Kill Mosquitoes, Gnats, & Flies?

Ozone generators (machines) have also been found to be effective against flying insects like mosquitoes, gnats, and flies. These bugs are more susceptible to ozone due to their small size and relatively delicate constitution. Making ozone generators a more effective killer of these flying pests than some other bugs.

However, the same caveats apply – high concentrations and prolonged exposure are needed, and these conditions aren’t safe for humans or pets.


How Ozone Generators Affect Other Insects

Ozone generators can also kill a variety of other insects, such as cockroaches, ants, and spiders. However, as mentioned with other bugs, the effectiveness of ozone depends on the concentration and duration of exposure.


How Do Ozone Generators Work?

Ozone generators work by simulating the natural process of ozone creation, which typically happens in the atmosphere when ultraviolet radiation from the sun strikes oxygen molecules. 

These machines use two primary methods to generate ozone: ultraviolet light and corona discharge.

  1. Ultraviolet light method: The ozone generator emits UV light at a specific wavelength that breaks oxygen molecules into individual atoms. These atoms then combine with unbroken oxygen molecules to form ozone.
  2. Corona discharge: This process involves passing air through an electrically charged field, which causes the oxygen molecules to split and recombine to form ozone. This method is more energy-efficient and can produce larger quantities of ozone.


How to Use an Ozone Generator for Pest Control


Before using an ozone generator, evacuate all humans and pets from the area. Remove electronics, as ozone can potentially cause damage.

Placement and Duration

Place the ozone generator in the bug-infested area. Run it for 3 to 10 hours per room​​. Ensure a high output of ozone, especially for indoor pest eradication. If you’re treating an entire house, it might require 25 to 30 hours of non-stop processing

The duration of the ozone machine necessary to kill pests like fleas and bed bugs will take longer than for flying insects like mosquitoes, gnats, and flies.


After running the generator, wait at least four hours before re-entering the room. This allows ozone levels to reduce to safer levels​​.

Safety Reminder

Always use ozone generators safely and responsibly, adhering to all manufacturer’s instructions. Ozone generators should be part of a broader pest management strategy, not a standalone solution.



Ozone is indeed a powerful oxidant that is capable of killing insects and various microorganisms. It can also eliminate odors, tastes, and colors, making it potentially useful as a fumigant for decontaminating different spaces​.

Ozone generators can kill bugs and insects such as fleas by exposing them to a high ozone concentration and are effective in eradicating most infestations​​. But it’s important to ensure that you take all safety precautions when using Ozone Machines due to their health risk with prolonged exposure.

Beyond using an ozone machine, consider utilizing other home remedies like flea collars and professional pest control companies.

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