About On Guard Sanitation
On Guard Sanitation is a NSW-wide remediation provider delivering safe, reliable and discreet services for homes, businesses and essential facilities.
- 24/7 response for urgent remediation
- Certified technicians trained in WHS, IICRC & biohazard protocols
- Discreet attendance with removable vehicle signage
- Evidence-based processes using DF200, HEPA filtration & structural drying
- EPA-accredited waste disposal for full compliance and safety
From Crisis Response to Full Remediation Expertise
On Guard Sanitation didn’t begin as a traditional cleaning or remediation company. It began in a moment of crisis — a moment when NSW needed people to step forward.
When the COVID-19 pandemic hit, there was fear, confusion and a huge shortage of trained professionals who understood how to safely decontaminate environments. Homes needed protection. Schools needed reassurance. Aged care facilities and medical centres needed strict protocols. Businesses needed someone reliable who knew how to manage infectious risk properly.
We saw the gap.
And we filled it.
Armed with PPE, specialised chemicals and a commitment to turning uncertainty into safety, we started as a COVID cleaning specialist during the height of the pandemic. Every day felt urgent. Every job mattered. And every client needed someone who could explain the risks clearly, implement containment, and make sure their space was genuinely safe.
Those early months taught us the foundations of who we are today: calm in high-pressure situations, meticulous in our process, and deeply committed to protecting people and property.
Understanding the layout, building styles, moisture patterns, and airflow issues common in Sydney properties allows the team to diagnose and treat contamination more precisely. This local insight ensures your remediation is not only thorough but tailored to Sydney’s environmental conditions and property types.
Trusted to restore safety and peace of mind
Posted on Phil GaleTrustindex verifies that the original source of the review is Google. I recently hired mark for mold remediation work at my home, and I couldn't be more satisfied with the service. From the initial consultation to the final inspection, mark was professional, knowledgeable, and extremely reliable. He arrived on time, explained the work clearly, and made sure everything was up to code.Posted on Simmeone HanlenTrustindex verifies that the original source of the review is Google. Cannot recommend Mark highly enough. He was patient, caring and understanding with such a sensitive matter. He and his team did an outstanding job and we were all so thrilled with the results as they exceeded our expectations.Posted on Charbel ElhageTrustindex verifies that the original source of the review is Google. Great and very reliable team you honestly will not find better and explains in ENGLISH exactly the issues and what needs done to fix it . Thanks to mark and the team job well done 🙏Posted on Trent ShahTrustindex verifies that the original source of the review is Google. Mark and the team are incredible at what they do. They are reliable, thorough, and take real pride in their work. You can tell he genuinely cares about providing the best possible service and making sure everything is done properly. If you’re looking for someone you can count on to get the job done right, Mark and On-Guard Sanitisation are the ones to call. Highly recommend!Posted on Joseph HalavazisTrustindex verifies that the original source of the review is Google. I highly recommend the services of On-Guard Sanitisation. They are very reliable, empathetic, fairly priced and show dedication to their clients.Posted on Andrew GTrustindex verifies that the original source of the review is Google. Highly recommend On-Guard's services. I have utilised their services for clients on multiple occasions and have consistently been impressed with their professionalism, quality of work and cost. Thank you guys!Posted on Susan ConollyTrustindex verifies that the original source of the review is Google. On-guard sanitation provided a service for the retirement village where I work. Mark was prompt, professional, very effective and kind and friendly to boot! I would definitely recommend their help on what is probably your worst day.Posted on Albert NasrallaTrustindex verifies that the original source of the review is Google. Mark has carried out lots of odd jobs for me both in the building and biohazard industries. I would not hesitate in hiring Mark again as he is polite, respectful and goes above and beyond every single time. Thank you Mark and On-guard Team!!Posted on Swati MitraTrustindex verifies that the original source of the review is Google. Mark and his team were extremely thorough and professional in conducting testing and remediation work. I would highly recommend them for anyone experiencing mould related issues. Mark was also kind enough to provide additional guidance on mitigating future issues.Posted on MARYANNE dayTrustindex verifies that the original source of the review is Google. Mark and his team did an excellent job. They were very thorough. I would highly recommend them for any job that needs specialist cleaning.
How We Grew Beyond COVID
As we attended COVID jobs across NSW, something became very clear — the skills required for infectious disease remediation were the same skills needed for so many other hazards.
We were already using moisture meters and reading instruments to diagnose problems.
We were already working in PPE and WHS-controlled environments.
We were already using containment, HEPA filtration and DF200 — the two-part chemical solution we still use today.
And we were already developing a reputation for doing things properly.
Clients began asking:
“Do you handle mould?”
“Can you help after a flood?”
“What about sewage, biohazards, trauma or deceased estates?”
At first, these weren’t services we marketed, but they were services we knew how to deliver safely. And the more we took on, the clearer it became:
The community needed more than COVID cleaning.
They needed a reliable remediation partner.
So On Guard Sanitation expanded — carefully, deliberately and with training to match. We built our response capabilities, refined our processes and invested in equipment that matched our growing responsibilities.
What started as COVID cleaning evolved into full-scale environmental remediation.
Our Work Today
On-Guard Sanitisation is the premier provider of trauma cleaning and biohazard remediation. We are a 100% Australian-owned and operated company with more than 15 years of experience in biohazard removal. We have built a solid reputation in the community and in the industry, abiding by our core values, honesty, integrity and competitive pricing.
More Australians are using On-Guard sanitisation as their preferred sanitisation experts and a reliable partner for keeping them safe. We believe that our customers deserve the highest quality service while being treated with dignity and respect
On-Guard Sanitisation is New South Wales’ most trusted, professional, discreet and preferred decontamination company. More Australians are using On-Guard Sanitisation as their preferred biohazard experts.
We understand the trauma and stress you are going through when you require our services, and the situation is a turbulent ordeal. It can be confusing and potentially fraught with emotion. Cleaning up after these situations is never easy. That’s why you need our highly qualified, trained professionals at On-Guard sanitisation.
On-Guard Sanitisation is here to ease the situation, from dealing with insurance companies and government bodies on your behalf, providing discreet services and you will be allocated a dedicated specialist to manage your situation as your direct point of contact.
Our highly dedicated, trained and experienced biohazard remediation specialists are available 24/7, 365 days a year to provide forensic cleaning services to restore your home or business to a safe and habitable condition.
Since our founding, we’ve worked with numerous clients throughout Australia. Great service begins and ends with experienced and friendly professionals, which is why we put so much consideration into selecting only the best to join our team. We complete projects efficiently and on schedule, and go above and beyond to form long-lasting relationships with our clients
We pride ourselves on delivering a prompt and reliable service to property owners, real estate managers, insurance companies, government bodies and body corporates. Contact us today to discuss your biohazard remediation requirements.
A Compassionate Side to Remediation
Not every job is technical. Many are emotional.
Trauma scenes, unattended deaths and hoarding homes require sensitivity and privacy. We take this seriously. “Our vehicles don’t have permanent signage — we use magnets. When we go to sensitive jobs, we remove the magnets so people don’t know what we’re there for.”
Once inside, our team works quietly and respectfully. “On these jobs, we proceed quietly inside, so from the outside we look like any tradie, not a trauma cleaning crew.”
And before any clear-out begins, we make sure the environment is sound: “We check the structural integrity and overall environment before we start the job.” This blend of technical skill and humanity is why NSW clients trust us during their most difficult moments.
What We Do: Biohazardous Cleaning Specialists
Since our founding, we have added various services to serve our community better. Using our solutions and state-of-the-art equipment, we can restore homes and businesses alike, no matter the cause of damage.
- Virus control, disinfection and decontamination
- Police and prison cell cleanup
- Biohazard disinfection and decontamination
- Mould Remediation and removal
- Unattended deaths, Suicide and trauma Cleanups
- Crime Scene Cleanup
- Sewage Cleanups
- Mould Removal and Remediation
- Industrial Accident Cleanup
- Deceased Estates Cleans
- Drug lab and testing clean up
- Hoarding and gross filth cleanup
- Drug lab and testing clean up
- Unattended deaths and suicide cleanups
- Needle syringes and sharps removal
- Traffic accident cleanup
- Blood clean up
- Faeces, Urine and Vomit Cleanup
- Biohazard Cleanups
- And more
Our Commitment to NSW
On Guard Sanitation has grown from a pandemic-born necessity into a full remediation provider — but our purpose has never changed: protect people, protect property, and respond when others won’t.
We’re here 24/7.
We work quietly, safely and respectfully.
We follow the science, not shortcuts.
And we support families, businesses, property managers, insurers and community organisations across the state.
Every job matters. Every client matters.
And every space deserves to be safe again.







