As the world grapples with the COVID-19 pandemic, people are becoming increasingly aware of the importance of clean air in their homes and workplaces. Air purifiers have become a popular solution for those looking to improve the quality of the air they breathe, but not all air purifiers are created equal. When searching for the best air purifier for viruses and bacteria, there are a few key points to keep in mind.
Firstly, look for an air purifier with a HEPA filter. HEPA filters are capable of capturing particles as small as 0.3 microns, which includes most viruses and bacteria. Secondly, consider the CADR rating of the air purifier. CADR stands for Clean Air Delivery Rate and measures how quickly an air purifier can clean the air in a room. Thirdly, look for an air purifier with a UV-C light. UV-C lights are effective at killing viruses and bacteria by disrupting their DNA. Fourthly, consider the noise level of the air purifier. If you plan on using it in a bedroom or other quiet space, you'll want to choose one that operates quietly. Lastly, consider the size of the room you want to purify. Air purifiers are rated for different room sizes, so make sure you choose one that is appropriate for the space you want to use it in.
In summary, when searching for the best air purifier for viruses and bacteria, look for one with a HEPA filter, a high CADR rating, a UV-C light, a low noise level, and appropriate for the size of the room. By keeping these key points in mind, you can find an air purifier that will help keep the air in your home or workplace clean and healthy.
10 Best Air Purifier For Viruses And Bacteria
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1. Westinghouse 1701 Hepa Air Purifier With Ncco Technology – Ideal For Medium To Large Rooms, Eliminates Bacteria, Viruses, Dust, Pet Dander, Odors, Allergies, And Smoke.
The Westinghouse 1701 HEPA Air Purifier with Patented Medical Grade NCCO Technology is an innovative solution to the issue of indoor air pollution. This advanced air purifier is designed to eliminate and kill bacteria and viruses, filter out dust and pet dander, remove odors, and alleviate allergies caused by seasonal irritants.
The Westinghouse 1701 utilizes a combination of pre-filter, True H13 HEPA filter, and patented NCCO technology (Nano Confined Catalytic Oxidation) to sanitize your home and remove harmful pollutants. NCCO technology breaks down harmful particles in the air into harmless compounds, making it more effective than a charcoal filter. This technology is also certified by both CARB and cETL, having passed UL867 ozone standard testing and regulation of ozone emission products. All ozone or Active Oxygen generated by these products is consumed inside the device.
One of the key features of the Westinghouse 1701 is its ability to kill viruses and bacteria. The 4-stage, 300 square foot air purifier is capable of sanitizing 99.95% of viruses and bacteria organisms in the home, bedroom, workplace, and office. This coverage is ideal for medium to large rooms.
The Westinghouse 1701 also effectively removes pet hair and allergens from the air, capturing dust, pollen, dandruff, and other seasonal irritants that cause allergies. Additionally, the air purifier collects and degrades foul-smelling molecules from secondhand cigarette smoke, cigar and pipe smoking, wildfire smoke, ash, and garbage.
In addition to these features, the Westinghouse 1701 also captures and renders inert workplace VOCs (Volatile Organic Compounds) from aerosols, acetones, paints, stains, strippers, fuels, and solvents. This is especially important for those who work with chemicals or in areas with poor air quality.
Overall, the Westinghouse 1701 HEPA Air Purifier with Patented Medical Grade NCCO Technology is an excellent solution for anyone seeking clean, healthy indoor air. Its advanced technology, combined with its ability to sanitize and remove harmful pollutants, makes it an ideal choice for medium to large rooms, offices, kitchens, and bedrooms.
2. Homedics Totalclean Tower Air Purifier With Hepa & Uv-C Technology For Small Rooms.
The HoMedics TotalClean Tower Air Purifier is a highly effective air purifying solution that offers a 360-degree HEPA-type filtration system to remove up to 99% of airborne allergens as small as 0.3 microns. The air purifier also includes a built-in carbon filter that reduces odor and volatile organic compounds (VOCs), as well as a prefilter that captures large particles for complete and thorough air cleaning.
The air purifier utilizes UV-C technology and HEPA-type filtration to reduce and capture 99.9% of bacteria, viruses, mold, and fungus, making it an ideal option for small bedrooms and home offices up to 170 sq. ft. With adjustable settings, users can conveniently choose from 3 speed settings to clean the air as quickly as they want, and the built-in timer can be set at intervals of 2, 4, 8, or 12 hours to suit individual needs.
For added customization, the HoMedics TotalClean Tower Air Purifier includes a glowing night-light that can be turned on or off as desired, along with essential oil pads that can be used with Ellia Essential Oils (sold separately) to fill the space with relaxing fragrance. Additionally, users can turn on the ionizer to enhance purification and achieve a more thorough cleaning of the air.
The package includes the HoMedics TotalClean 5-in-1 UV Air Purifier, a HEPA-Type Filter with Built-in Prefilter and Carbon Odor Filter, 3 Essential Oil Pads, and a Quick Start Guide for easy setup and use. With its comprehensive features and advanced technology, the HoMedics TotalClean Tower Air Purifier is an excellent choice for anyone looking to breathe easier and enjoy cleaner, fresher air in their home or office.
3. Pure Enrichment® Purezone™ Air Purifier For Medium-Large Rooms With Uv-C Light And H13 Hepa Filter. Helps Remove Up To 99.97% Of Bacteria, Allergens, Germs, Smoke, And Dust.
The Pure Enrichment® PureZone™ Air Purifier is a powerful tool for cleaning the air in medium to large rooms of up to 300 sq. ft. The three-stage air purification system effectively removes up to 99.97% of particles such as dust, pollen, pet dander, smoke, and household odors. The first stage involves a washable pre-filter and activated carbon filter that captures large particles and absorbs odors. The second stage utilizes a True H13 HEPA filter that captures smaller particles, while the third stage incorporates a built-in UV-C light that eliminates viruses and bacteria.
The PureZone™ Air Purifier has been independently tested and proven to eliminate up to 99.9% of viruses and bacteria, including Staphylococcus albus, Escherichia coli, Aspergillus niger, and H1N1. The UV-C light adds an extra layer of cleanliness to the air purification system, making it an ideal choice for those who want to ensure that their indoor air is as clean and healthy as possible.
The air purifier has three fan speeds, low, medium, and high, and operates quietly with a soothing white noise level of just 30dB. The touch-button control panel makes it easy to adjust the fan speed, set the timer, and turn the UV-C light on or off. The timer function allows users to save energy by setting the purifier to run for 2, 4, or 8 hours.
The PureZone™ Air Purifier is energy-efficient and easy to use. It has a filter reset indicator that lets users know when it's time to replace the filter, and the three-in-one filter lasts up to six months. In addition, the air purifier comes with a UV-C light bulb and a five-year warranty from Pure Enrichment, a brand that millions worldwide trust for quality and peace of mind.
In conclusion, the Pure Enrichment® PureZone™ Air Purifier is a top-of-the-line product that delivers powerful air purification for medium to large rooms. Its three-stage filtration system and built-in UV-C light eliminate up to 99.97% of particles, viruses, and bacteria, making it an ideal choice for those who want to ensure that their indoor air is as clean and healthy as possible. The purifier is energy-efficient, easy to use, and comes with a five-year warranty, making it a smart investment for anyone who cares about the quality of the air they breathe.
4. Triad Aer V3 Air Purifier: Medical Grade Filtration, Lifetime Charcoal Filter, 99.99% Particle Removal For Large Rooms. Removes Allergens, Bacteria, Viruses, And Mold.
The Triad Aer V3 Large Room Air Purifier is a medical-grade filtration system designed to remove 99.99% of airborne particles, including allergens, bacteria, viruses, and mold. With its lifetime washable charcoal filter, this air purifier is not only effective but also eco-friendly, making it an excellent choice for those who want to reduce their carbon footprint.
This air purifier is capable of destroying pollution from the air, which can be embedded in walls, ceilings, floors, carpets, furniture, and other surfaces. It also reduces or eliminates odors such as cigarette smoke, mildew, food, and other unpleasant smells. Additionally, the Triad Aer V3 contributes to the sanitization of all surfaces, making it an essential tool for those who want to maintain a clean and healthy living space.
One of the standout features of this air purifier is its remote control capability. With the ability to turn on the Triad Aer V3 from anywhere, users can enjoy the benefits of clean air without having to be in the same room as the purifier. This feature makes it an ideal choice for those who want to purify the air in their home or office without disrupting their daily routine.
The Triad Aer V3 is also designed with the environment in mind. Its eco-friendly design ensures that it has a minimal impact on the environment, making it an excellent choice for those who want to reduce their carbon footprint. With its lifetime washable charcoal filter, users can also save money on filter replacements, making it a cost-effective option as well.
In summary, the Triad Aer V3 Large Room Air Purifier is an effective, eco-friendly, and convenient solution for those who want to improve the air quality in their home or office. Its medical-grade filtration system, lifetime washable charcoal filter, and remote control capability make it a standout choice in the air purifier market.
5. Westinghouse Portable Air Purifier With Ncco Technology And True Hepa Filter – Removes Bacteria, Viruses, Allergens, And Odors – Ideal For Travel And Hospitality Use.
The Westinghouse 1804 Patented NCCO Technology Portable Air Purifier is a medical-grade air purification system that uses patented NCCO reactor technology to break down all gaseous pollutants and contaminants with Active Oxygen, converting them into harmless compounds like carbon-di-oxide and water molecules. The purifier features a True HEPA filter that efficiently traps harmful pollutants like viruses, bacteria, allergens, and other air pollutants.
Unlike other air purifiers that only "trap" and "store" harmful pollutants, the Westinghouse Air Purifier kills and eliminates them. It eliminates VOCs, smoke, and odors with Active Oxygen, which is generated by the purifier's patented NCCO Reactor. The purifier has been awarded both CARB and cETL certifications, having passed UL867 ozone standard testing and regulation of ozone emission products. All ozone or Active Oxygen generated by these products is consumed inside the device.
The portable air purifier is perfect for travel and personal use. Weighing only 2 pounds, it comes with a woven and leather strap and can be used in your car, on an airplane or train, and in a hotel, making it ideal while traveling. The purifier is your personal-size purifier on the go, and it can clean the air of 99% of air pollutants in any space for up to 8 hours on a single charge.
The 1701 Air Purifier uses a 3-stage purification system to clean the air. As air moves through an Oxygen Generator, True HEPA filter, and the patented NCCO Reactor, clean and sanitized air is released. It is compatible with Westinghouse OEM H11 Filter, and the warranty is invalid if non-Westinghouse OEM replacement filters are used.
In summary, the Westinghouse 1804 Patented NCCO Technology Portable Air Purifier is a powerful and efficient air purification system that is perfect for personal and travel use. It uses patented NCCO reactor technology to break down all gaseous pollutants and contaminants with Active Oxygen, converting them into harmless compounds. It also features a True HEPA filter that effectively traps harmful pollutants like viruses, bacteria, allergens, and other air pollutants. Get your Westinghouse Air Purifier today and breathe clean air wherever you go!
6. Homezens Uv Air Sanitizer 2 Pack – Plug-In Purifier For Viruses & Bacteria, Eliminates Germs & Odor With Uv Light, Portable For Home, Hotel & Travel.
The HomeZens UV Air Sanitizer 2 Pack is a highly effective solution for eliminating germs, viruses, and bacteria from the air. These plug-in air purifiers utilize UV-C light to inactivate airborne pathogens and microorganisms, including mold, bacteria, and viruses. The powerful UV light can kill up to 99.9% of germs and bacteria, and works with Titanium Dioxide to reduce volatile organic compounds and indoor air pollutants without the need for additional liquid or chemicals.
What sets the HomeZens UV Air Sanitizer apart from other air purifiers is its portable plug-in design. Measuring just 7 inches, this small wall pluggable air purifier is perfect for use in any room of the home, including the kitchen, bathroom, bedroom, and children's rooms. Simply plug it into any 120V outlet, and the 180-degree rotatable plug allows for optimal positioning and sanitization of a 10㎡ room within 2 hours.
The top cover of the HomeZens UV Air Sanitizer is designed for full protection, and the fully sealed air purification design works in photolysis cavity, preventing radiation and ozone leakage. This means that users do not need to leave the room when the sanitizer is in operation. There is no filter to clean, and replacement of the UV-C bulb is suggested every 6-8 months (Amazon Search: B086DKLSS1).
In addition to its powerful sanitizing capabilities, the HomeZens UV Air Sanitizer operates quietly, thanks to its built-in turbine cycle and low speed fan. This ensures that users can enjoy peace of mind without any distracting noise.
Overall, the HomeZens UV Air Sanitizer 2 Pack is an excellent choice for those looking to eliminate germs and bacteria from the air in their homes or travel locations. Its portable plug-in design, powerful UV-C light, and quiet operation make it a highly effective and convenient solution for sanitizing indoor air.
7. Blueair 7770i – Advanced Air Purifier For Large Rooms With Hepasilent Technology, Alexa Compatibility, And Odor Removal. Ideal For Dust, Pollen, Smoke, Bacteria, Virus, And Allergen Protection.
The BLUEAIR Advanced Air Purifier Large Room is a top-of-the-line air cleaner designed to provide 24/7 protection against viruses and bacteria. The GermShield technology incorporated in the device kills 99% of germs that are caught by the filter. In addition, the device proactively monitors conditions and prevents growth on the filters when on standby.
One of the key features of this air purifier is the HEPASilent dual filtration system, which delivers up to 45% faster cleaning and up to 67% less noise than traditional HEPA filtration alone. This allows the device to quickly clean a 674sqft large room in about 12.5 minutes or up to 3,235sqft XL space in 60 minutes, on high.
The BLUEAIR Advanced Air Purifier Large Room also comes with in-app features that allow it to automatically adjust to maintain optimal air conditions. The device has three advanced sensors that provide real-time updates to track clean air progress.
The SmartFilter in the device incorporates an RFID chip that monitors and tracks pollutant levels in real-time to calculate filter life and alert on replacement needs. It automatically resets the replace filter reminder when a new filter is installed, and it has a maximum 1-year filter life.
This air purifier is also one of the quietest on the market, operating at just 25 dB on low, which is quieter than a whisper. Additionally, it is ENERGY STAR rated, using less energy (8W) than an LED lightbulb on low, making it kind to both your wallet and the planet.
The device is recommended by Asthma Allergy Nordic and removes 99.99% of common allergens, helping to reduce allergens and pollutants that trigger allergy and asthma symptoms. It also removes odor and particles down to 0.1 micron, making it ideal for smoke and smog during wildfire season. The device removes 99.97% of airborne particles like smoke, dust, viruses, and pet dander, while the carbon filter traps light household odors from smoking, pets, and cooking.
Finally, the BLUEAIR Advanced Air Purifier Large Room is the most awarded air purifier brand in the US, winning the 2021 RedDot – Product Design and IF – Product Design awards. Overall, this air purifier is an excellent choice for anyone looking for a high-performance, feature-rich air cleaner that provides 24/7 protection against germs and allergens.
8. Molekule Air Purifier With Peco Technology For Large Rooms, Silver.
The Molekule Air Large Room Air Purifier with PECO Technology is a cutting-edge device designed to provide clean and healthy air in large rooms up to 600 square feet. Using Photo Electrochemical Oxidation (PECO) nanotechnology, the device destroys viruses, VOCs, allergens, bacteria, and mold, ensuring that the air you breathe is free of harmful pollutants.
The PECO technology used in the Molekule Air is a breakthrough in air purification. Unlike traditional air purifiers that collect pollutants in a filter, PECO technology destroys them at the molecular level, breaking them down into harmless components like carbon dioxide and water. This means that the air coming out of the Molekule Air is completely clean and free of harmful particles.
The Molekule Air Large Room Air Purifier is designed to be used in large rooms such as large bedrooms, living rooms, and family rooms. With its powerful PECO technology, it can effectively clean the air in rooms up to 600 square feet, making it perfect for larger homes and businesses.
One of the standout features of the Molekule Air is its smart and connected capabilities. The device features an easy-to-use touch-screen interface that allows users to control the unit with ease. For added convenience, the Molekule Air can also be connected to WiFi, allowing users to control the device remotely using the iPhone or Android app.
The Molekule Air is also highly portable, thanks to its natural leather handle. This allows users to easily move the device from room to room, ensuring that clean air is always available wherever it is needed.
Overall, the Molekule Air Large Room Air Purifier with PECO Technology is a powerful and innovative device that provides clean and healthy air in large rooms. With its breakthrough PECO technology, smart and connected capabilities, and portability, it is an excellent choice for anyone looking to improve the air quality in their home or business.
9. Swiss-Made Iqair Healthpro Plus – Three-Pack Air Purifier With Hyperhepa Filter Eliminates Odors, Bacteria, Viruses, Allergens, And Airborne Particles, Making It Ideal For Asthma Triggers, Pets, Smoke, Pollen, And Dust.
The IQAir HealthPro Plus is a medical-grade air purifier that uses advanced filtration technology to remove a wide variety of air pollutants, including odors, bacteria, viruses, airborne particles, allergens, pets, asthma triggers, smoke, pollen, and dust. Made in Switzerland, this product features an exclusive HyperHEPA filter that is capable of trapping ultrafine particles down to 0.003 microns, which is much smaller than a virus.
Rated as the #1 room air purifier, the IQAir HealthPro Plus has a professional-grade air filtration system that includes V5-Cell and PreMax filters in addition to the HyperHEPA filter. These filters work together to remove particles, gases, and odors from the air. The HyperHEPA filter is especially effective at removing particles that are 100 times smaller than 0.3 microns, making it a powerful tool for anyone looking to improve the air quality in their home or office.
Each HealthPro Plus unit is designed to cover a room size of up to 1,125 sq ft (104.5 sq m), with air delivery up to 300 cfm (510 m3h) at the highest fan speed. This makes it suitable for use in large rooms, such as living rooms, bedrooms, and offices. The device is also designed to be easy to use, with intuitive controls that allow users to adjust the fan speed and set a timer.
Customers who purchase the IQAir HealthPro Plus directly from the manufacturer can expect each unit to be delivered separately, and will need to sign for the package upon delivery. The product is compliant with CARB EO # G-10-059 and EPA Establishment # 97566-CHE-1 regulations, and cannot be shipped to PO boxes.
Overall, the IQAir HealthPro Plus is a high-quality air purifier that offers powerful filtration capabilities and is designed to improve the air quality in any room. Its medical-grade filtration system is effective at removing a wide variety of air pollutants, making it a great choice for anyone looking to improve their health and well-being.
10. Puraclenz P750 Purifies Air And Surfaces In Rooms Up To 750 Sq Ft With Patented Ozone-Free Technology That Destroys Viruses, Stops Mold Growth, And Deactivates Bacteria.
The Puraclenz P750 Surface & Air Purifier is an innovative device that uses patented technology to destroy viruses, stop mold growth, and deactivate bacteria both in-air and on surfaces. The device is designed for rooms up to 750 square feet, making it ideal for homes and small businesses.
One of the most significant benefits of the Puraclenz P750 is its ability to destroy viruses at the source. The device generates ions that have been scientifically proven to be over 99% effective at deactivating pathogens mid-air and on surfaces throughout your home. This makes it an excellent choice for individuals who are concerned about the spread of viruses, especially during cold and flu season.
The Puraclenz P750 is also highly effective at stopping mold growth. If your home or business has a mold problem, or you have a mold allergy, this device can help. It is over 95% effective at destroying mold mid-air and over 99% effective at deactivating mold spores on surfaces, including hard-to-reach nooks and crannies where mold likes to grow.
In addition to destroying viruses and stopping mold growth, the Puraclenz P750 is highly effective at deactivating bacteria and deodorizing your indoor space. It is over 99% effective at reducing dangerous bacteria in the air and purifying lingering odors caused by mold, smoke, and bacteria. The device's ions proactively destroy bacteria mid-air and on exposed surfaces, including walls, furniture, and fabrics 24/7.
The Puraclenz P750 uses a patented photocatalytic oxidation (PCO) technology that was originally developed for the International Space Station to provide clean air for astronauts. Unlike conventional air purifiers, the Puraclenz P750 does not require air passing through the device to eliminate pathogens. Instead, it pushes ions throughout your home to destroy pathogens at the source both mid-air and on the surfaces where they originate.
One of the most significant benefits of the Puraclenz P750 is that it is certified safe for people and pets. The device generates an exceptionally high density of ozone-free ions to deactivate indoor pollutants without producing harmful byproducts. Unlike other air purifiers and ozone generators, the Puraclenz P750 is certified ozone-free and has been proven by independent laboratory tests to not create VOC byproducts. All independent laboratory tests were performed with a Puraclenz P750 unit, and test results are available online.
In conclusion, the Puraclenz P750 Surface & Air Purifier is an excellent choice for individuals who are concerned about the spread of viruses, mold growth, and bacteria in their indoor space. Its patented technology and independent laboratory certification make it a reliable and effective solution for clean air.
Best Air Purifier For Viruses And Bacteria FAQs
Are there any specific features or technologies to look for in an air purifier for virus and bacteria removal?
When looking for an air purifier for virus and bacteria removal, there are several features and technologies to consider. Firstly, the purifier should have a HEPA filter, which can capture particles as small as 0.3 microns, including many viruses and bacteria. The filter should also be able to remove volatile organic compounds (VOCs) and other harmful gases. Additionally, purifiers with UV-C technology can kill viruses and bacteria by breaking down their DNA. Photocatalytic oxidation (PCO) is another technology that can destroy these pathogens by creating reactive oxygen species. Finally, consider the room size and the CADR (Clean Air Delivery Rate) of the purifier to ensure that it can effectively clean the air in your space. It's important to note that while air purifiers can help reduce the spread of viruses and bacteria, they should not be relied upon as the sole method of protection. Other measures such as social distancing, hand washing, and wearing a mask should also be taken.
Can air purifiers with activated carbon filters remove viruses and bacteria from indoor air?
Activated carbon filters in air purifiers are effective in removing certain types of airborne pollutants such as smoke, odors, and chemical fumes. However, they are not designed to remove viruses and bacteria from indoor air. To effectively remove these microorganisms, air purifiers must be equipped with HEPA filters that can trap particles as small as 0.3 microns.
HEPA filters are capable of capturing a range of airborne contaminants, including viruses and bacteria. While no air purifier can guarantee complete protection against all viruses and bacteria, those equipped with HEPA filters can significantly reduce the number of airborne pathogens in indoor air.
It is important to note that air purifiers should be used in conjunction with other measures such as regular cleaning and disinfection to maintain a healthy indoor environment. Additionally, air purifiers should be appropriately sized for the room to ensure optimal performance.
How do air purifiers with HEPA filters compare to UV-C air purifiers for virus and bacteria removal?
Air purifiers with HEPA filters and UV-C air purifiers both have their benefits in removing viruses and bacteria from the air. HEPA filters are effective at capturing small particles, including bacteria and viruses, as they pass through the filter. However, once captured, the viruses and bacteria remain alive and can reproduce if not disposed of properly.
UV-C air purifiers use ultraviolet light to kill viruses and bacteria as they pass through the purifier. This method is effective at destroying the DNA of these microorganisms, preventing them from reproducing and spreading. However, UV-C air purifiers are less effective at removing larger particles, such as dust and pollen.
In short, both types of air purifiers have their strengths and weaknesses when it comes to virus and bacteria removal. HEPA filters are effective at capturing small particles, while UV-C purifiers are effective at killing microorganisms. A combination of both technologies may provide the best results in keeping the air clean and healthy.
How often do air purifiers need to be cleaned or have their filters replaced to maintain their virus and bacteria removal effectiveness?
The frequency of cleaning or replacing air purifier filters depends on several factors, including the type of filter, the level of air pollution, and the manufacturer's recommendations. Generally, HEPA filters should be replaced every 6 to 12 months, while activated carbon filters may last up to 2 years. Pre-filters, which capture larger particles, should be cleaned or replaced every 1 to 3 months. However, during times of high pollution, such as wildfire season, filters may need to be replaced or cleaned more frequently. To maintain virus and bacteria removal effectiveness, it is essential to follow the manufacturer's instructions and replace filters as recommended. Additionally, regular cleaning of the air purifier unit itself, including the fan and other components, can help ensure optimal performance.
What are the most effective air purifiers for removing viruses and bacteria from indoor air?
Air purifiers that use high-efficiency particulate air (HEPA) filters are effective in removing viruses and bacteria from indoor air. HEPA filters can capture particles as small as 0.3 microns, including most viruses and bacteria. Air purifiers that also use ultraviolet (UV) light can provide an additional layer of protection by killing viruses and bacteria that are trapped by the HEPA filter. Some air purifiers also use activated carbon filters to remove odors and chemicals from the air, but these filters are not effective in removing viruses and bacteria. It is important to choose an air purifier that is appropriately sized for the room it will be used in and to follow the manufacturer's instructions for filter replacement and maintenance. Additionally, air purifiers should be used in conjunction with other measures, such as regular cleaning and disinfecting, to help prevent the spread of viruses and bacteria.