Chemistry
Disinfectant fogger chemistry: hydrogen peroxide, efficacy and why there's no residue
The machine is only half of it. What you fog with decides whether the treatment stands up in an audit, whether it damages your equipment, and whether anyone has to clean up afterwards.
In short
A disinfectant fogger for infection control uses hydrogen peroxide based chemistry, which breaks down to water and oxygen, leaves no residue and produces no waste to dispose of. Independent sporicidal testing and university research support reductions of up to 99.9999% across bacteria, viruses, fungi and spores, including on equipment and electronics.
5 min read

Why is hydrogen peroxide used in a disinfectant fogger?
Sanondaf's published article on hydrogen peroxide and its environmental impact makes the case plainly: it is widely recognised as a more environmentally responsible alternative to traditional fumigation gases, it breaks down to water and oxygen, it leaves no residue and it produces no waste stream to dispose of.
For a food factory, a NICU or a research building, 'nothing left behind' is not a nice-to-have. It is the reason the treatment can be run during a normal downtime window instead of a shutdown.
How do we know it works?
Independent sporicidal efficacy testing of Sanosil S010 delivered by fogger supports use where spore-forming organisms such as C. difficile are the concern. University research conducted in partnership with Sanondaf examined how the delivery system influences efficacy of low concentrations of hydrogen peroxide against common healthcare-associated pathogens — confirming that how you deliver the chemistry matters as much as the chemistry itself.
Further Sanondaf case study work reviews vapourised hydrogen peroxide and its efficacy of inactivation of prions and viruses, among the most difficult contaminants to inactivate. Together this supports reductions of up to 99.9999% across bacteria, viruses, fungi and spores.
Will fogging damage equipment, electronics or materials?
The standard objection is equipment damage. A Sanondaf case study of hydrogen peroxide use on equipment and materials looks directly at the effect on equipment, electronics and materials, and a separate study demonstrated full decontamination of a contained vessel within a biotechnology facility without dismantling the equipment involved.
How much chemical do you need, and how is it supplied?
Chemical supply runs alongside the lease. The initial order is a minimum of 100 litres unless otherwise authorised, with ongoing minimums set against your treatment plan, and three months of lease payments are required upfront at the start of the term.
Once it is on site, the cost model is simple: lease cost divided by the number of rooms you treat, plus chemical. Treat more rooms, and the cost per room falls.
Frequently asked
- Does a disinfectant fogger leave residue on surfaces?
- No. The hydrogen peroxide based chemistry breaks down to water and oxygen, leaving no residue and no waste output requiring disposal.
- Is it safe around electronics and sensitive equipment?
- Sanondaf case study material specifically reviews hydrogen peroxide use on equipment, electronics and materials, including full decontamination of a contained biotechnology vessel without dismantling the equipment. Compatibility is confirmed as part of your site survey.
- How much chemical do we need to start?
- A minimum initial order of 100 litres unless otherwise authorised, ordered alongside the machine at the start of the lease.
Sources: material published by Sanondaf UK at sanondaf.co.uk (news, research and case studies) and the technical and commercial documentation held by the Shropshire & West Midlands office. Figures are indicative and confirmed at survey. Efficacy is stated as up to 99.9999% reduction.