5 min read time

Do We Use Chemicals? What's In Our Mould Fog

Updated on
August 7, 2026

Do you have a mould problem?

One of our technicians applying EverPURE, our durable antimicrobial layer, to all surfaces to help resist mould coming back.

Don't leave it to chance. Contact us today to get a free, no-obligation quote. Our team of consultants can help you understand what's potentially causing your mould issue, recommend a course of action and talk through pricing and availability.

Get a Quote

Does Pure Maintenance Use Chemicals?

Perhaps you've noticed a patch of black mould growing as a result of a recent leak or condensation problem. Or maybe you have a more widespread mould problem and want to understand what a treatment actually involves. If you're exploring the services offered by mould removal and decontamination companies, you're likely curious about what those companies apply inside your home. Below we explain what we use, how it is applied, and what is left afterwards.

The honest answer matters more than a reassuring one, so here it is. Yes, we use a biocide — as does every disinfectant. At Pure Maintenance UK we deliver a service using authorised actives rather than selling a product, and everything is applied under a COSHH assessment by trained technicians in PPE. Occupants and pets leave during treatment. The active does its work while the house is empty, then breaks down to acetic acid (vinegar), water and oxygen and is ventilated out. No lasting disinfectant residue.

Our 'dry fog' is the means by which we treat household mould, so that it can be removed and its return resisted. It's important to note, however, that the fogging is just a part of a wider treatment plan. We operate under Dewpoint-accredited technical governance. Our technicians understand how the delicate balance of humidity, air temperature, surface temperature, structural integrity, air pressure and ventilation combine to cause mould growth. When we remediate your mould problem, we tailor our approach to take into account all of the variables within your home:

InstaPURE: Our dry fog solution to treat mould

Our technology is patented and was created in the USA. We are the exclusive UK licensees of our parent company Pure Maintenance. This is important as the entire process was created to comply with strict US regulations. We deliver a service using authorised actives rather than selling a product. We apply InstaPURE under a COSHH assessment to oxidise and destroy the living mould and its spores, then prove the result with independent lab analysis.

InstaPURE breaks down into acetic acid (vinegar), water and oxygen, leaving no lasting disinfectant residue.

More importantly, the patented fogger we use to administer InstaPURE forces the active into such a small particle size that it is unable to condense. This is what gives the fog its characteristic 'dryness'. This means the fog doesn't condense on surfaces but rather dwells in the air. It's this property that lets InstaPURE reduce airborne mould spores and bring down the airborne mycotoxin load. The fogger creates positive air pressure by filling the airspace with InstaPURE until the entire volume of the room is filled. We treat in a sealed room and hold the fog there for a full dwell period, so it reaches every exposed surface the air touches — into folds and recesses a cloth can't. This is reach and contact, rather than penetration into materials. Because it can't condense, once we open the windows upon concluding the first phase of treatment, the air pressure falls and the active disperses. Once the windows are open and the room's aired out, no lasting disinfectant residue remains in the home you return to.

EverPURE: Our solution to help resist regrowth

EverPURE is our antimicrobial coating. We apply it once the mould in the home has been treated and wiped away. It bonds to the surfaces it's applied to, giving a durable antimicrobial layer that helps resist regrowth. The coating is made up of positively charged nitrogen molecules with carbon atoms stacked on top. Microscopically, it looks like a bed of nails as the carbon atoms create a spike. New pathogens introduced to the property following our treatment are electrostatically attracted to the positive charge and the carbon spike pierces the outer membrane, denaturing the microbe.

As with InstaPURE, EverPURE is applied under a COSHH assessment; the actives are authorised at manufacturer level. We deliver a service rather than selling a product. We do recommend storing any food in cupboards or refrigerators as it can affect the taste of the food.

Furthermore, EverPURE is a mineral-based solution. This is important as the way in which it deals with mould is mechanical. In other words, it doesn't change the organic property of a mould cell. It physically disrupts it.

What's Left After We Fog Your Home?

We treat your home, reset the air to the outdoor-air benchmark, and give you independent lab analysis to prove it. Spore counts and the airborne load of the agents mould produces — mycotoxins, mVOCs, glucans, hyphal fragments — are significantly reduced against that benchmark. We don't claim to capture every microscopic particle, and we don't claim to break down mycotoxins already deposited in the home. What we do claim, we measure. Once the home has been ventilated and cleared it is safe to return to, typically the same day. You can read about other people's experiences in our customer reviews. Our comprehensive mould treatment plan is called PureHome for a reason.

Do You Want a Quote For Our Specialist Mould Treatment?

Have a mould problem? Speak to one of our in-house experts today for an overview of our services, prices and timescales. Our quick response team offer free consultations and no-obligation quotes.