12 minute read

Expert Q&A

Contact time—are you disinfecting properly?

What you need to know

An important factor in an effective cleaning, sanitizing and disinfection protocol is the contact time for the products that you use. Contact time varies with different formulations. Do you know what contact time is, how long it is for your disinfectant and where to find this information?

What’s the difference between a cleaner, a sanitizer and a disinfectant?

It’s important to know the difference between these products because they accomplish different things. A cleaner physically removes soil, inorganic and organic material from a surface or object.1 A sanitizer reduces the bacterial population on a surface or object, but does not destroy all bacteria.1 A disinfectant is capable of killing or inactivating pathogens on surfaces and objects. Note that disinfectants may not be capable of killing bacterial spores (check the label!).1 Some products fit more than one of these criteria, and if they do, will be labelled Cleaner Disinfectant, Disinfectant Cleaner, Sanitizer-Disinfectant or Sanitizer and Disinfectant.

Your disinfectant can’t do its job without the right contact time.

What is contact time?

Simply put, contact time is the length of time a disinfectant must be in contact with a target surface or device to achieve the desired efficacy result.1 Any bacteria or virus efficacy claims (like “Kills virus X in 2 minutes”) are dependent on the contact time. Contact time will be different for sanitizing a surface vs. disinfecting a surface. For example, a sanitizer and disinfectant product could be capable of sanitizing a surface in 1 minute, but would require 5-10 minutes to disinfect against bacteria and viruses.

How do you ensure that you’re meeting the right contact time?

The most common industry practice is to keep the surface you are disinfecting visibly wet for the full contact time as listed on the label, in order to ensure efficacy.2 For this reason, you may also hear contact time referred to as “wet time”.2 Disinfectants may also indicate this on their instructions for use, for example “Allow surface to remain wet for (X) minutes (or seconds)”.1,2 One important thing to note is that if a surface dries before the contact time is up, you will need to reapply the product and ensure the proper contact time is met for the disinfection to be effective.2

How do contact times vary for different products?

Check the label on your disinfectant and you will see that depending on the format of the disinfectant, the contact time can be 15-30 seconds (e.g. disinfectant wipes), 1 or 2 minutes, to 4 or even as long as 10 minutes (the maximum time allowed for disinfectant efficacy).2,3 It’s important that when cleaning and disinfecting that we don’t work too fast for the disinfectant to do its job. The Public Health Agency of Canada recommends choosing products that clean (physically remove soil and organic material) and disinfect (kill germs) all at once.1,4,5 This includes premixed disinfectant cleaning solutions and/or wipes when available).4 Most disinfectant wipes also have the advantage of short contact times, often 30 seconds, and some as little as 15 seconds. When you are disinfecting high-traffic areas, a short contact time can also be an advantage. For example, with the conveyor belt in a grocery store, or the counter at a retail or hotel checkout, it is important that effective disinfection happens quickly.

Check the label on your disinfectant to find out the contact time

How do contact times vary for different pathogens?

If you check the efficacy data for a disinfectant, you will usually see that the contact time required to kill pathogens can vary. The contact time required to kill the bacteria or virus will depend on the type of pathogen. For example, for bacteria like E coli, contact time could be as short at 1 minute, while C. difficile spores require a contact time of 5 minutes.

CloroxPro® has you covered

Whether you are disinfecting a grocery store, restaurant, kitchen, school, retail space or office, CloroxPro® has a range of products to meet your disinfection needs. • Kill germs quickly on frequently touched hard, nonporous surfaces with Clorox® Disinfecting Wipes, which are

Health Canada registered to kill most viruses in as little

as 15 seconds6 . • Pair with the new Clorox® TurboPro™ handheld electrostatic sprayer, a great, inexpensive way to incorporate electrostatic technology into your cleaning protocols. It’s a convenient, cordless way to disinfect hard-to-reach spaces in your facility. Get your entire space Clorox® clean in minutes.

Learn more about the contact times of the products in the CloroxPro® portfolio at CloroxPro.ca or by contacting CloroxProCanada@clorox.com.

References: 1. Health Canada. Guidance document: Disinfectant Drugs (2018). https://www.canada.ca/content/dam/hc-sc/documents/services/drugs-health-products/drug-products/applications-submissions/guidancedocuments/disinfectants/disinfectant-drugs/disinfectant-drug-eng.pdf Accessed June 1, 2021. 2. Lowe R. Strazdas L, Quon J and Srikanth M. The importance of contact time and visible wetness to ensure effective disinfection. Becker’s Clinical Leadership & Infection Control Newsletter February 16, 2018. 3. Parker-Pope T. Have I been cleaning all wrong? https://www.nytimes.com/2020/05/06/well/live/coronavirus-cleaning-cleaners-disinfectants-home.html. Accessed June 1, 2021. 4. Government of Canada. Cleaning and disinfecting public spaces during COVID-19. https://www.canada.ca/en/public-health/services/publications/diseases-conditions/cleaning-disinfecting-public-spaces.html. Accessed June 1, 2021. 5. Public Health Ontario COVID-19 Infection Prevention and Control (IPAC) environmental services for healthcare settings. https://www.publichealthontario.ca/-/media/event-presentations/pho-webinar-infectionprevention-control-environmental-services.pdf?la=en. Accessed June 11, 2021. 6. Per Health Canada approval with the exception of Ebola virus (20 seconds) and Rotavirus (4 min). © 2021 The Clorox Company

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We have expanded our trusted family of products by adding the Clorox® TurboPro™ Handheld Electrostatic Sprayer – offering new, mobile ways to disinfect spaces of all kinds. With a versatile family of electrostatic sprayers designed for use with Health-Canada registered Clorox® chemistries, evolution is in our nature. Learn more at CloroxPro.ca

RECOGNIZING RESTORATION’S ROLE

Q+A: Impact Cleaning Services’ Yiannis Boutsalis explains how the bar has been raised during the pandemic era

by Tom Nightingale

IMPACT DIRECTOR YIANNIS BOUTSALIS

The COVID-19 pandemic has brought a renewed focus on, and appreciation of, the importance of proper cleaning and disinfection for both facility managers and operators. But we must not forget to show some love to restoration, too.

Whether it’s cleaning up after water damage, mould control and removal, or safeguarding the future of buildings, this field of work is an integral part of facility maintenance. It may not have hit the headlines in the way that infection control has, understandably, over the last 20 months or so, but all over Canada and beyond, restorative teams are hard at work preserving and improving facilities and properties.

Toronto-based Impact Cleaning Services operates across Ontario, from Ottawa to London, Sarnia, and Fort Erie, and stretching as far north as Barrie and nearby areas. Over its 65 years of history in the industry, the business has offered a mixture of varied cleaning and restoration services, offered in-house to all clients.

FC&M spoke to Impact director Yiannis Boutsalis about the firm’s work in restoration, why restoration work cannot be overlooked within the wider industry, and how COVID-19 has intensified the challenges of facility maintenance.

This interview has been edited for length and clarity.

“It’s easy not to appreciate the importance of restoration until you’re confronted with a crisis you’re unprepared for.”

TELL US HOW IMPACT OPERATES TODAY, AND HOW IT GOT TO THIS POINT.

YIANNIS: We’ve been doing this for 65 years, my father has been here for over 40 years. Wherever we do cleaning, we also offer restoration work to all our clients as an inhouse service because we have all the equipment and all the expertise to be able to take on that responsibility for our clients. Any time anyone has an emergency or even planned services, we can provide it, from mould mediation to water damage to the cleanup and some of the construction afterwards. Focusing on smaller-scale work rather than largescale restoration and construction projects allows us to stay nimble and a lot less overhead-heavy and operate as efficiently and effectively as possible.

WHY SHOULD RESTORATION SERVICES BE A CONSISTENT FOCUS FOR FACILITY MANAGERS?

YIANNIS: With restoration services, it’s truly the case that an ounce of prevention is worth more than a pound of cure. Being prepared with your building for any situation that might happen is so vital. It’s easy not to appreciate the importance of it until you’re confronted with a crisis you’re unprepared for. It’s often all about being able to react with the urgency and ability necessary to mobilize in that last minute, to get to the facility and mitigate any further damage or further issues.

I think restoration services are usually seen as vacuuming up water, cleaning up after damage, removing something that’s unhealthy for the environment and patching it up afterwards. But just as important is the peace of mind for clients and tenants because it’s business interruption. It’s not just fixing the damage that occurred; you’re mitigating any future damage to the workplace. It can be very disruptive to anybody’s life to have to move out of their home or workspace for a week because sprinkler heads have broken or the stove caught on fire and damaged the unit. A lot is necessary in terms of the planning, even just who you bring on board to do that work, making sure they’re accredited through the proper channels, ensuring they actually have the ability and tools necessary. Much like in terms of COVID-19, if you don’t have those necessary tools, processes, and personnel, you’re not going to be able to give the confidence to people that they can return to their place of work or living with the understanding that they are now safe and secure. If you go with a half measure, you’re always going to get problems in the end and also lose a lot of trust in your tenants, your team, and just about everybody involved in the space you’re operating in. Restoration services are vitally important to any building.

COVID-19 HAS CHANGED SO MUCH ABOUT CLEANING AND MAINTENANCE. HOW HAS RESTORATION WORK BEEN AFFECTED?

YIANNIS: A key factor is that there’s now always the added layer of PPE as the first step of everyone’s safety. You never know if you’re going to be confronted with a biohazard or a natural hazard, so you always had a level of PPE and safety in mind. But with COVID-19 now a persistent factor, you’ll sometimes be in tight spaces with many people, and you have to protect yourselves as well as other people to make sure everyone around you is safe, particularly in high-traffic and essential facilities and spaces.

Just like with cleaning nowadays, with restoration you have to make sure everyone is geared up the right way to respond to any call, and that does involve adding a little bit more to the checklist. Ensuring you have all the tools you need – PPE, the proper equipment, the right chemicals – so you’re not only cleaning up after the job but also disinfecting the space so everyone will be safe. We’re much more frequently having to respond to situations like sanitization or disinfection for COVID-19 much like we would do under normal circumstances for restoration work if it were water damage or emergency cleanup for any reason.

HOW MUCH OF IMPACT’S WORK IS IN THE COMMERCIAL/ OFFICE SPACE, AND WHAT SPECIFIC CHALLENGES DO THOSE FACILITIES BRING?

YIANNIS: Commercial and office facilities make up about 60 per cent of the work we do, while another 20 per cent would be in industrial and larger manufacturing facilities and things where the office is tied to the warehousing or the manufacturing plant.

A challenge felt particularly keenly with office facilities has been how empty they are, as that doesn’t necessarily give you a good sense of what spaces are being occupied, where things are occurring, if people are coming into work, and how the building tends to be set up and operating. In facilities like a warehouse or a manufacturing plant or a shipping and receiving space, everyone tends to be coming in and out of the same doors and is likely to be in the same spaces. Not only that, but your scope of work covers that entire building itself, oftentimes with only one tenant or company within it. In contrast, when

you enter an office building, it can be a collection of 100 tenants or just one tenant depending on how much space they occupy. Each client or tenant in that space then has their own different requirements and necessities, and much of the space may be empty. Not only do you have property management informing you, but you have a variety of different rules and procedures in place. So, you often end up in a much larger and more varied environment: behind each door is a different stakeholder dictating the safety of their employees. That then has knock-on effects in terms of our own employee safety and processes.

HAS THE PANDEMIC CHANGED ATTITUDES TOWARDS MAINTENANCE AND RESTORATION WORK? WILL THOSE CHANGES LAST?

YIANNIS: You do see more these days the appreciation of the work being done, especially when it comes to places deemed essential. I think people understand more the extent of cleaning and maintenance, but they don’t necessarily appreciate the number of hours that go into every day to keep facilities clean and safe. But now, when something gets added on that is vitally important to keep the space safe during these times, it tends to get more noticed. That’s nice to see because the public didn’t used to be that quick to appreciate the frontline staff.

With restoration, I think the scope of what people are going to expect will change. They’ll know it’s not just those cleanups like water damage and mould remediation and certain special instances like lead in confined spaces. I think the understanding of and the focus on what skills are needed, the level of protection and professionalism necessary to complete that work and be guaranteed in its results, will continued to be heightened. Also, there’s been a huge boost in the education of the benefits of becoming certified in the trade of restoration services. There are a lot of steps behind the scenes that go into making sure this job is being applied in a very secure and well-planned and educated way. Certain things like GBAC’s accreditation, that training comes in with restoration before you are even able to step foot on a job and be certified to handle the work. A lot of that education crosses over. Accreditation is going to be particularly important.

At the beginning of pandemic, everyone was willing to find a way to provide the necessary chemicals and solutions to keep everyone safe. As time goes on and you certify those things, the bar is raised, and that can only be a good thing. /

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You can play a pivotal role in helping keep your facilities safe by implementing a comprehensive facility cleaning program. SC Johnson Professional has a range of products you can trust to help you clean and sanitize workspaces.

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