Assured Building Maintenance Inc

What is Electrostatic Cleaning?

In the cleaning world, there’s a new technique in town. Electrostatic disinfection has changed the way we maintain our buildings. With COVID-19 focusing a lot of attention on disinfecting high-touch areas, this method has really taken off. But, what is it, and how does it work?


Using an electrostatic charge to apply disinfectant may be a new idea, but the concept behind it goes back to 1941. That’s when American inventor Harold Ransburg patented the first electrostatic sprayer. It was designed to improve the process of industrial painting.

A positive electric charge was added to the liquid paint as it passed through the nozzle. This charge caused the droplets to repel each other and attract to the negatively charged surfaces around them. This created full, even coverage that wrapped around all surfaces. The idea was embraced by the automotive industry when it came to painting cars.

This concept also became popular for distributing pesticides on crops. Thanks to breakthroughs in adapting the technology, electrostatically charged particles are now being used for disinfection.

How Does It Work?

When the disinfecting solution passes through the applicator, it gives the particles a positive charge. These positively charged particles repel each other. That means they spread out evenly. These particles also attract to the surface they are being applied to. Because their charge is greater than gravity, they will quickly wrap around the targeted object. This creates an even coat – not spotty coverage.

Though this process will decontaminate any pathogens that are currently present, it’s important to note it does not prevent re-contamination. Regular, scheduled applications are recommended.

What Is The Process

To clarify, the electrostatic process is for disinfection only. This method does not physically remove soil. So, for areas that have stubborn debris or grime, a cleaning process is required before applying the disinfectant.

There are only so many hours in the day and only so much elbow grease that can be applied to cleaning a facility. Disinfecting every nook and cranny is not realistic nor possible. However, germs and bacteria know no bounds. They spread throughout many areas that are impossible to reach using standard tools and techniques. That is why electrostatic disinfection has become so popular. The charged particles allow for 360-degree coverage.

Working from top to bottom, our trained technicians slowly sweep the nozzle back and forth to evenly distribute the aerosolized solution. They continue until all surfaces have been covered. The fine mist of the aerosolized particles allows for suitable dwell time. Dwell time is the amount of time the disinfectant needs to remain moist in order to work effectively.

The time required to complete electrostatic disinfection depends on the size of the space. Staff may re-enter the area immediately, which means limited disruptions to your schedule. You may notice a fine residue left behind. This can be cleaned off high-touch areas after they are dry.

How Effective Is It?

This process kills 99.9% of bacteria on hard, non-porous surfaces. It is an extremely effective way to reach all surfaces, simply not possible through other methods. Though electrostatic disinfection kills germs currently on surfaces, it does not provide a barrier for re-contamination. So, the process will need to be repeated to be effective. Your unique industry and environment will determine how often is necessary.

When you choose Assured Building Maintenance as your trusted janitorial provider, you will receive a FREE electrostatic disinfection. If you have questions about this process or would like further information about this service, contact us today.

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