Clean first, then disinfect

Cleaning with a microfiber cloth

Cleaning and disinfection have long been routine in any facility. Of course, the COVID-19 pandemic has further highlighted these operations since SARS-CoV-2 can persist on various surface materials for hours or days. Facilities have sought to improve these cleaning and disinfection practices. Therefore, it is imperative that this process be orderly. Therefore, this article addresses the importance of cleaning before disinfecting. Cleaning and disinfection should be a 2-step process to reduce the risk of transmission of environmental infections.

Clean first! Why?

Primum nitidare – “D’abord nettoyer (Clean First)”. It is a book that my coworker, Gaétan Lanthier, wrote in 2019. It is to say that this is not a new subject!

Centers for Disease Control and Prevention (CDC) cites: “cleaning is “the necessary first step of any sterilization or disinfection process” or, more
simply, you must clean first before you can disinfect.”

The CDC adds: “Cleaning is the necessary first step of any sterilization or disinfection process. Cleaning is a form of decontamination that renders
the environmental surface safe to handle or use by removing organic matters, salts, and visible soils, all of which interfere with microbial inactivation.”

It’s in the mechanical action (friction)

As the CDC mentions it: “The physical action of scrubbing with detergents and surfactants and rinsing with water removes large numbers of
microorganisms from surfaces.”

Studies have shown that friction or mechanical action is at the heart of cleaning. This facilitates the effective removal of dirt, debris, microbes and soiling, making a surface ready for disinfection if necessary.

It’s a matter of interference

The CDC defines cleaning as the “necessary first step” in any disinfection process for “at least two” important reasons: it removes any barrier between the disinfectant and the target pathogen, and it removes materials that could potentially inactivate the disinfectant.

In order to effectively kill pathogens, disinfectant chemicals must have direct contact with the pathogen; however, soils, dirt, and debris can coat or
protect microorganisms, essentially serving as a protective barrier between the chemical and the target.

The build-up to biofiolms

Another important reason to clean first before disinfecting has less to do with the immediate action of a disinfectant on a surface. Rather, it is in prevention of a future problem, namely the buildup to biofilms.

Biofilms are populations of microorganisms attached to a solid surface and protected by a “viscous layer”. This layer is an extracellular matrix of polysaccharides and non-cellular materials.

Biofilms can virtually form on any hard surface, from the countertop to the water pipe. They are involved in a range of infectious diseases.

What about touch-free technology?

Comac ULVC Electrostatic Sprayer for Disinfection

Although research has shown that many of these systems, from ultraviolet light (UV-C) to hydrogen peroxide vapor (HPV) to electrostatic sprayers, can reduce microbial contamination, experts caution that they should be used as a complement to standard manual cleaning and disinfection rather than as a replacement.

Organic matters, dirt and grimes are a limiting factor for UV-C technology.
A light or heavy organic load has a significant negative impact on the destructive efficiency of the devices.

In short, clean first with mechanical action (friction) to remove dirt, debris and microbes. The disinfection step is to be done when the interferences are removed by cleaning in order to kill microbes. This reduces the risk of transmission of environmental infections by keeping surfaces clean.

Loose translation of Rubbermaid TWO STEPS FOR A REASON:
THE CASE FOR CLEANING PRIOR TO DISINFECTION

https://www.rubbermaidcommercial.com/resource-center/1b113258af3968aaf3969ca67e744ff8/The_Case_for_Cleaning_Prior_to_Disinfection_White_Paper/

Sources:
https://www.cdc.gov/coronavirus/2019-ncov/community/disinfecting-building-facility.html

UV disinfection how does it works?

r2d2 UV disinfection

Since 1877, scientists know the microorganisms can be eliminated by UV rays. Nearly 50 years later, however, they discovered the specific type of frequency that was the most damaging.

In the 1950s, researchers knew that UV rays penetrate cells and damage the nucleic acids or deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). This led to the commercial development of multiple UV disinfection devices, primarily with mercury vapor, which produces UV having the most effective frequency for the destruction of microorganisms. Today, UV disinfection devices use xenon UV rays.

UV disinfection is used in many hospitals

UV disinfection devices are used in hospitals such the ones in Vancouver and Hamilton. It is the natural evolution of the UV disinfection, to which are added the cleaning and disinfecting surface and a good dose of prevention.

Combined with touchless systems for bathrooms and public spaces, hospitals are able to reduce the number of surfaces to be disinfected to prevent nosocomial infections.

In any case, these robots do not replace the housekeeping staff but add a small sector futuristic air … don’t you see a family resemblance with this R2-D2 designed by Agent-Spiff?

We have UV solutions for you

Not to disinfect but to perform quality control. Visit our web site to find out more about it

A Wednesday Tale: Romans used to say: Automate your restrooms

roman_legionaire_restrooms

This is not really that the Romans would tell each other after a rough battle against the Gallic, but nowadays the battle is never ending and merciless against the irreducible microbes!

Certain bacteria are good for us

And yet, most of bacteria are good for us, simply think of yoghurts or biological products and you’ll see that not all bacteria must be eliminated!

In certain environments such as at home, it’s not necessary to eradicate all microbial activity on the surfaces. It’s still better do it in an operating room though!

Let’s talk about public restrooms

Whether it is in a clinic, at school, in a shopping mall, a restaurant, or even at the office, certain people are a bit reluctant to touch surfaces. And you?

Conceive the ideal restroom

In this room, you will find accessories that have been conceived based on 3 fundamental criteria:

  • Infection spread risk reduction
  • Consumption reduction (environment protection)
  • Comfort and well-being of the user

Among these items, you’ll find:

The best way to discover the ideal restrooms is to visit our web site at www.lalema.com. 

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