Category Archives: Carona Virus

  • -

Environmental Fogging with Disinfectants COVID-19

Some suppliers and cleaning contractors are advising their clients to use environmental fogging to disinfectant office environments against COVID–19.  As of 19 March 2020 there is no advice published by any public health department that indicates that environmental fogging is an acceptable disinfection technique for COVID-19.

Clients are advised to carefully research claims made by suppliers and contractors in relation to disinfectants and disinfections procedures.  The US CDC (Centre for Disease Control and Prevention) has a specific stance on fogging chemical disinfectants:[1]

CDC and HICPAC have recommendations in both 2003 Guidelines for Environmental Infection Control in Health-Care Facilities and the 2008 Guideline for Disinfection and Sterilization in Healthcare Facilities that state that the CDC does not support disinfectant fogging. Specifically, the 2003 and 2008 Guidelines state:    2003: “Do not perform disinfectant fogging for routine purposes in patient-care areas. Category IB”

2003: “Do not perform disinfectant fogging for routine purposes in patient-care areas. Category IB”

2008: “Do not perform disinfectant fogging in patient-care areas. Category II”

In 2011, when presented with new technologies, the CDC clarified its position on disinfectant fogging “More research is required to clarify the effectiveness and reliability of fogging, UV irradiation, and ozone mists to reduce norovirus environmental contamination. (No recommendation/unresolved issue).

The 2003 and 2008 recommendations still apply; however, CDC does not yet make a recommendation regarding these newer technologies. This issue will be revisited as additional evidence becomes available”.

Fogging chemicals in the environment in a commercial building may create possible issues if it goes through the HVAC system that may be expensive to resolve or may cause health issues amongst building users.

In Australia, disinfectants and claims for disinfectants have to be registered with the Therapeutic Goods Administration (TGA) and there are specific guidelines in relation to acceptable testing methods and claims for disinfectant products[2].   If the product and product testing is not registered and approved with the TGA and the manufacturers or suppliers are making specific claims of virus action, then the product might be illegal to sell in this country.

Clients are recommended to report suppliers selling non-approved disinfectants or making non-approved specific claims disinfectant  activity against C19 to the TGA immediately.

Is it worth the risk?



  • -

Office Cleaning and Corona virus

There is a lot of misinformation regarding cleaning requirements in office areas to prevent the spread of COVID-19 Corona virus.  Some cleaning companies are using this as a reason to push clients into paying for extra services that they don’t need or would have little or any effect preventing spread in a Corona virus outbreak.  One recent example is where a contract cleaning manager told a major client that they would have to spend a lot of money so they could buy in special disinfectants and recommended that the client have their carpets and all office chairs ‘steam’ cleaned as part of their response.

When provided with information by a contract cleaning manager, check their credentials and their qualifications in virology and infection control and ask for references from public health authorities and World Health publications that back up their claims and their proposed methodologies.

The best course of action is for the client to go to those authorities first, research the facts, the risks and the required practices to minimise risks of transmission of this disease.  Once the correct procedures are established, review your scope for cleaning services to ensure that the cleaning requirements are adequate and appropriate for a public health alert.   All public health authorities recommend regular and thorough cleaning of high touch surfaces (e.g. doors, handles, hand rails, taps, keyboards etc) combined with hand hygiene procedures as applicable for COVID-19 in public settings.

A review of the cleaning scope for your building should include a review of and ongoing audits of cleaning methodologies and cleaning hygiene practices.  FM Contact Solutions regularly audits cleaning practices in commercial buildings and finds consistent failings that expose clients and building workers to unnecessary public health risks.

Issues to look for include, but are not limited to

  • Cleaning practice – do the cleaners in your building work from clean to dirty surfaces or from dirty to clean?  It is not uncommon to find toilets being cleaned first before moving to other areas.
  • Adherence to colour coding – many contractors input implement colour coding but don’t include proper training and supervision. Examples include cleaning toilets with a red cloth and then cleaning kitchens with the same cloth.
  • Cleaning cloth hygiene
    Microfibre cleaning cloths should be laundered daily according to colour and dried using a commercial dryer. Dirty and damaged cloths should be disposed of.

    Dirty cleaning cloths and cross contamination of cleaning cloths are major hygiene risks

    • How many cleaning cloths of each colour are issued to each cleaner and how frequently are cloths changed when cleaning surfaces?
    • Are cleaning cloths changed when moving from one area to another?
    • Are clean clothes being laundered in a washing machine and commercial dryer or simply rinsed out and left to dry on their cleaning trolleys overnight?
    • Are cloths laundered separately according to colour code in a washing machine and dried in a commercial dryer?
    • Are different coloured cleaning cloths in contact with each other?
    • Are used cloths in contact with clean cloths?
  • Hand hygiene
    • Do your cleaners wear gloves and do they change their gloves frequently during each shift e.g. when moving from area to area?
    • Do your cleaners wash their hands frequently and thoroughly before starting work, between sections, before and after breaks and eating food, after visiting or cleaning toilets and before they go home?
    • Do daytime housekeepers change their gloves and wash their hands before handling clean crockery and cutlery and moving to a new kitchen?
    • Are there dedicated daytime housekeepers to handle to rubbish and clean toilets?  
    • Do your housekeepers clean staff kitchens after moving rubbish or cleaning toilets?
    • Are refillable soap dispensers in toilets and kitchens contaminated with bacteria? (Hint: Look for an odour, discolouration, scum, and product preparation in the dispenser.)
Refilllable handsoap dispensers can become contaminated with bacteria

Refillable hand soap dispensers are often contaminated with harmful bacteria

High Touch surfaces

    • Does your cleaning scope require daily cleaning of high touch surfaces?
    • Are these surfaces actually being cleaned every night?
    • Are the cleaning processes appropriate or do they simply spread dirt and contaminants from one surface to another?
  • Cleaning equipment and cleaning trolleys used to transport cleaning chemicals and cleaning cloths around the building
    • Are cleaning trolleys clean and free of dust and contaminants?
    • Are used cleaning cloths in contact with surfaces on the cleaning trolley?
    • does your service provider require cleaners to follow a nightly clean of equipment after each shift? is there a documented procedure in their building operations manual and daily cleaning task lists?
    • Are vacuums fitted with HEPA filtration to minimise the spread of contaminants through the building HVac system?
  • Cleaning storage areas- The condition of equipment and the cleanliness of cleaning storage areas provides a snapshot into the professionalism of a contractor and their adherence to basic hygiene practices.  Clients should regularly inspect cleaning storage areas to ensure that Hygiene requirements are strictly followed.  Storage areas and all equipment should be clean and neatly stored.  There should be no cleaning cloths hanging on lines or draped over trolleys or buckets and the floor and all surfaces should be clean and dust free.

There are many science-based reference documents prepared by federal and state health authorities and qualified practitioners available to help facility managers and company managers develop strategies to minimise risk of outbreaks and transmission of Covid-19 in their facilities.

Here are some useful links-

Cleaning is essential public health, and along with hand hygiene is a key factor in minimising the risk of transmission of diseases like Carona virus.  Cleaning contractors however are not necessarily experts in public health and the effectiveness of cleaning is limited by the scope of works provided to the contractor and the lack of ongoing audits of cleaning effectiveness and cleaning hygiene systems by the client.

Cleaning strategies to reduce risks of transmission it should be researched by the client and implemented and monitored in conjunction with the cleaning contractor.