Cleaning removes microbes at a single moment in time. The problem is what happens in the hours and days between cleanings, when high-touch surfaces are re-contaminated by every hand, glove, and tool that touches them. A new independent study measured exactly that gap, and tested whether a single application of an antimicrobial coating spray could keep surfaces cleaner for months without re-application.
The study: four months inside working Safety Level 2 labs
Between March and June 2025, VireXbuster was evaluated in the Safety Level 2 (SL2) laboratories at BioLabs.io in Heidelberg, Germany, a demanding real-world setting where researchers already follow strict hygiene protocols. Cleanliness was measured using ATP bioluminescence monitoring, the same rapid method hospitals and food producers use to verify surface hygiene. It reads surface contamination in Relative Light Units (RLU); a common compliance threshold is 300 RLU, above which a surface is considered non-compliant.
Investigators took 191 ATP readings across more than 20 high-touch sites: faucets, fridge and cabinet handles, waste-container lids, shared equipment, and door hardware. Surfaces were treated once with VireXbuster Spray, then monitored repeatedly over the following four months, with no re-application.
The results
The numbers held up over the full period from that single application.
53% lower average contamination
Mean surface contamination fell from 616.6 RLU to 288.1 RLU, a 53.3% drop that brought the average below the 300 RLU compliance limit.
60% fewer failing surfaces
The number of surfaces exceeding the threshold per monitoring round dropped by 60.4%, from an average of 6.0 to 2.375.
Biggest wins on the dirtiest spots
The highest-risk, most-handled surfaces improved the most: faucets by roughly 94%, fridge and cabinet handles by up to 87%, and waste-container handles by 73%. Crucially, these gains were achieved in a facility that already maintained stringent SL2 hygiene. In everyday settings such as offices, clinics, schools, gyms and transport, where baseline cleaning is less rigorous, the added benefit of a residual antimicrobial layer could be equal or greater.
What this means in plain terms
VireXbuster Spray is not a disinfectant and does not replace cleaning or disinfection. It works as a supplemental residual layer that keeps working between cleanings. The study supports the product’s core promise: a single application delivers durable protection consistent with up-to-12-month residual activity, using a hybrid formulation with a very wide spectrum of activity against virus, bacteria, fungi, mould, and mildew.
That performance is backed by independent credentials: BAuA approved, Fraunhofer tested (99.9% against viruses), QualityLabs certified as antimicrobial (99.99% against bacteria), and Dermatest rated “Excellent” for dermatological safety.
Where an antimicrobial coating spray fits
Any environment with shared high-touch surfaces benefits from a residual layer between cleanings: hospitals and dental or GP practices, laboratories, offices and co-working spaces, hotels and hospitality, public transport, and schools. VireXbuster Spray can be applied to metals, plastics, and hard or soft substrates, and protects for up to 12 months per application. You can explore the full VireXbuster range in the shop at https://www.virexbuster.de/shop.
Frequently asked questions
Does an antimicrobial coating spray replace cleaning?
No. It is a supplemental residual antimicrobial layer that keeps reducing microbial load between cleanings. Regular cleaning and, where required, disinfection should continue as normal.
How long does one application last?
In the BioLabs SL2 study, a single application maintained lower contamination across four months with no re-application, consistent with VireXbuster Spray’s up-to-12-month residual activity.
Is it safe to use around people?
VireXbuster is certified by Dermatest as “Excellent” for dermatological safety and is BAuA approved. In the US, the EPA classifies this category as a “Supplemental Residual Antimicrobial Product,” distinct from disinfectants; VireXbuster is not EPA-registered.
