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Vinegar disinfectant wash for vegetables or fruit (C) Daniel FriedmanBuilding Surface Disinfection
Products, instructions, wet time, drying time for using disinfectants & sanitizers

Disinfect building surfaces by a combination of pre-cleaning of heavy dirt or debris, selecting an appropriate cleaner or disinfectant solution or spray, and using the product according to its manufacturer's instructions.

Here we provide a table of common surface disinfectants and their application or contact time and use procedures.

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

- Daniel Friedman, Publisher/Editor/Author - See WHO ARE WE?

Disinfection of Building Surfaces

Clorox Spray Cleaner + Bleach cited & discussed at InspectApedia.com A number of cleaners and disinfectants used on building surfaces, such as in hospitals or when cleaning a building after a sewage backup, but keep in mind that these cleaners, sanitizers, or disinfectants are for building surfaces, not for use on foods such as produce.

Shown here: Clorox® "Original" spray cleaner + bleach.

[Click to enlarge any image]

7 Easy Steps for Using A Surface Disinfectant

  1. Check the cleaning product for approval for its intended use (US EPA list at epa.gov/listn )
  2. Read the instructions provided by the product manufacturer, usually printed on the product labels
  3. Pre-clean the surface using ordinary cleaners like soap and water if the surface is visibly dirty or as recommended in your disinfectant product's instructions
  4. Wear appropriate protective gear before using the disinfectant, such as goggles, disposable gloves, mask
  5. Apply the disinfectant to the surface as directed, often by spray, wetting the surface
  6. Wait the required contact time. Some products are wiped off, others are left to air-dry
  7. Wash your hands after using the product
  8. Keep harmful chemicals out of reach of children

What's the Difference Between Cleaning, Sanitizing, and Disinfecting?

In order of reduction of pathogens on surfaces we use the US EPA's following definitions:

Below we provide a table of common disinfectant and cleaning products and a summary of how they are used, surface wetting and required contact time.

Surface Disinfection Contact Times (NOT Appropriate for Produce or Other Foods)

Disinfectant & Application Contact Time
Alcohol Wet surface, Let evaporate 1
Benzalkonium chloride see Lysol
Bleach disinfectant spray

10 - 60 min

Varies by concentration 2

Botanical disinfectants 15 - 30 minutes 3
Cavicide spray Wet 2 min 8
Clorox Non-Bleach disinfecting spray Wet, 30 seconds, or
"a few minutes" 4
Hot Water for immersed objects 10
Hydrogen Peroxide (accelerated) See note 12
Iodine 25 ppm See note 11
Lemon Juice Questionable - See (Gaulin 2014)
Lysol® Spray Disinfectant Wet 3 min, then air dry 5
Microban® Wet 1 min, then air dry 6
Purell® Professional Surface Disinfectant Wet 30 sec, air dry 7
Quaternary Ammonium Compounds
(QUATs) 200 ppm
See notes 1, 9
Vinegar (acetic acid) Questionable
See note 12
See (Gaulin 2014)
Windex® Multi surface disinfectant cleaner Wet 10 minutes, wipe dry 14

Notes to the table above

Watch out: these disinfectants are for surface disinfection: they are NOT appropriate for produce or other foods

Watch out: be sure to use disinfectants, sanitizers, and cleaners as directed by the manufacture. Mixing chemicals or cleaners or using in an un-ventilated space or getting a some chemicals in one's eyes or on the skin can be quite dangerous.

  1. Alcohol surface-disinfectant: Dilute 90% or 70% ethanol or isopropyl alcohol with 30% water to slow evaporation and improve disinfection.

    Since alcohol is flammable, limit its use as a surface disinfectant to small surface-areas and use it in well-ventilated spaces only. - U.S. NIH cited at References:

    See Rutala, William A., Ph.D., M.P.H. & David J. Weber, M.D., M.P.H., CHEMICAL DISINFECTANTS [PDF] [Live link given at Research: below], U.S. CDC, retrieved 2022/05/15, original source: https://www.cdc.gov/infectioncontrol/guidelines/disinfection/disinfection-methods/chemical.html

    Excerpt: Alcohol: In the healthcare setting, “alcohol” refers to two water-soluble chemical compounds—ethyl alcohol and isopropyl alcohol—that have generally underrated germicidal characteristics 482.

    FDA has not cleared any liquid chemical sterilant or high-level disinfectant with alcohol as the main active ingredient.

    These alcohols are rapidly bactericidal rather than bacteriostatic against vegetative forms of bacteria; they also are tuberculocidal, fungicidal, and virucidal but do not destroy bacterial spores.

    Their cidal activity drops sharply when diluted below 50% concentration, and the optimum bactericidal concentration is 60%–90% solutions in water (volume/volume) 483, 484.


    This article gives the properties of the following disinfectants:

    Alcohol, Chlorine and chlorine compounds, Formaldehyde, Glutaraldehyde, Hydrogen peroxide, Iodophors, Ortho-phthalaldehyde (OPA), Peracetic acid, Peracetic acid and hydrogen peroxide, Phenolics, Quaternary ammonium compounds

  2. Bleach surface-disinfectant: Dilute household bleach 1/3 cup bleach to 1 gallon of water, leave on surface 6 minutes. Household bleach is sodium hypochlorite - retrieved 2022/05/13, source: https://www.clorox.com/learn/how-to-disinfect-clean-bathtub-shower-with-bleach/

    Among disinfectants currently readily available, none is as economical and effective as bleach when properly diluted and applied.

    Diluted bleach to 100-200 ppm is recommended (Chen 2020) - see this Online Bleach Calculator from Foodsafe Canada - BC - http://www.foodsafe.ca/dilution-calculator.html - to find the proper amounts of water and bleach to mix.

    Watch out: Use cold water when diluting bleach. If your diluting water is hot it will decompose the bleach and may make it ineffective!

    Watch out
    : never mix bleach with ammonia, alcohol, vinegar - you may produce toxic, even fatal gases such as chlorine gas.

    Bleach is a strong and effective disinfectant – its active ingredient sodium hypochlorite is effective in killing bacteria, fungi and viruses, including influenza virus – but it is easily inactivated by organic material.

    Diluted household bleach disinfects within 10–60 minutes contact time (see TABLE G.1 below for concentrations and contact times), is widely available at a low cost, and is recommended for surface disinfection in health-care facilities.

    However, bleach irritates mucous membranes, the skin and the airways; decomposes under heat and light; and reacts easily with other chemicals.

    Therefore, bleach should be used with caution; ventilation should be adequate and consistent with relevant occupational health and safety guidance. Improper use of bleach, including deviation from recommended dilutions (either stronger or weaker), may reduce its effectiveness for disinfection and can injure health-care workers
    . - U.S. NIH cited at References:

    SODIUM HYPOCHLORITE CONCENTRATION & USE (BLEACH) Table G.1
    [PDF] - retrieved 2022/05/15 original source: https://www.ncbi.nlm.nih.gov/books/NBK214356/table/annexg.t1/
    Quoting in entirety minor edits for clarity [Ed.]

    Starting bleach solution

    Most household bleach solutions contain 5% sodium hypochlorite (50 000 ppm available chlorine).

    Recommended bleach dilution


    1:100 dilution of 5% sodium hypochlorite is the usual recommendation. Use 1 part bleach to 99 parts cold tap water (1:100 dilution) for disinfection of surfaces.

    Adjust ratio of bleach to water as needed to achieve appropriate concentration of sodium hypochlorite. For example, for bleach preparations containing 2.5% sodium hypochlorite, use twice as much bleach (i.e. 2 parts bleach to 98 parts water).

    Available chlorine after dilution of bleach

    For bleach preparations containing 5% sodium hypochlorite, a 1:100 dilution will yield 0.05% or 500 ppm available chlorine.

    Bleach solutions containing other concentrations of sodium hypochlorite will contain different amounts of available chlorine when diluted.

    Bleach Contact times for different uses

    Disinfection by wiping of nonporous surfaces: a contact time of ≥ 10 minutes is recommended.

    Disinfection by immersion of items: a contact time of 30 minutes is recommended.

    N.B. Surfaces must be cleaned of organic materials, such as secretions, mucus, vomit, faeces, blood or other body fluids before disinfection or immersion.
  3. Botanical disinfectants: Review the manufacturer's specific instructions for contact time for effective disinfectant using a botanical product
  4. Clorox® Disinfecting Bathroom Cleaner instructions. - Original cleaner+bleach spray, label instructions (30 seconds) & Clorox bathroom cleaner instructions, retrieved 2022/05/13, source: https://www.clorox.com/products/clorox-disinfecting-bathroom-cleaner/

    Clorox® Disinfecting Bathroom Cleaner SAFETY DATA SHEET [PDF] - retrieved 2022/05/13, source: https://www.thecloroxcompany.com/wp-content/uploads/cloroxdisinfectingbathroomcleanerjw.pdf
  5. Lysol Spray Disinfectant Instructions, - retrieved 2022/05/13, source: https://www.lysol.com/products/disinfectant-spray/lysol-disinfectant-spray

    Excerpts:
    Spray 3 to 4 seconds until covered with mist.

    To sanitize: Surfaces must remain wet for 10 seconds then allow to air dry.

    To disinfect: Surfaces must remain wet for 3 minutes then allow to air dry.
  6. Microban instructions - retrieved 2022/05/13, source: https://www.wbmason.com/ & https://www.microban24.com/products/sanitizing-spray-fresh/

    To sanitize: Pre-clean heavily soiled surfaces. Hold container 6-8” from surface and spray until thoroughly wet. To sanitize hard, non-porous, non-food contact surfaces*: Apply product. Let stand 10 seconds. Wipe clean with a damp cloth.

    To sanitize hard, non-porous, non-food contact surfaces for 24 hours*: Apply product. Allow to air dry without wiping. Reapply if surface is scrubbed. To sanitize soft surfaces*: Apply product and let stand for 60 seconds. Let air dry.

    To disinfect bacteria & viruses: Pre-clean surface. Hold container 6-8" from surface and spray until thoroughly wet. For bacteria*, let stand for 60 seconds. Wipe with a cloth. For bacteria, viruses and fungi**, let stand for 5 minutes. Wipe with a cloth.

    To kill the virus causes COVID-19, spray Microban 24 Sanitizing Spray on a hard, non-porous, non-food-contact surface and allow it to remain wet for 60 seconds. Let the surface air dry without wiping.

    *When used as directed, effective against Pseudomonas aeruginosa, Staphylococcus aureus, Salmonella enterica, Escherichia coli 0157:H7, Enterobacter aerogenes, Listeria monocytogenes, Methicillin resistant staphylococcus aureus (MERSA), and streptococcus pyogenes.

    **When used as directed, effective against bacteria (Pseudomonas aeruginosa, Staphylococcus aureus, Salmonella enterica, Escherichia coli 0157:H7, Enterobacter aerogenes, Listeria monocytogenes, Methicillin Resistant Staphylococcus aureus, and Streptococcus pyogenes), viruses (Influenza A H1N1, Respiratory Syncytial Virus [RSV] and Human Coronavirus, Herpes Simplex virus type 1, Herpes Simplex virus type 2, Rhinovirus Type 39, and Norovirus & Rotavirus) and fungi (i Trichophyton mentagrophytes, and Aspergillus niger).
  7. Purell, PURELL PROFESSIONAL SURFACE DISINFECTANT Technical Bulletin [PDF] (2018) GOJO Industries, Inc. One GOJO Plaza, Suite 500 P.O. Box 991 • Akron, OH 44309-0991 Tel: 1-330-255-6000 • Toll-free: 1-800-321-9647 Fax: 1-800-FAX-GOJO

    PURELL PROFESSIONAL DISINFECTANT MSDS [PDF] (2015)
  8. Metrex, CaviCide - retrieved 2022/05/13, source: https://www.metrex.com/ - instructions for use were not easy to find at the company's website but we did find US EPA advice cited just below [Ed.]

    CAVICIDE PRODUCT LABEL INSTRUCTIONS [PDF] (2011) - retrieved 2022/05/13, source: http://legacy.picol.cahnrs.wsu.edu/~picol/pdf/OR/30443.pdf

    CAVICIDE INSTRUCTIONS for USE [PDF] (1994) [may be obsolete - Ed.] - retrieved 2022/05/13, source: https://www3.epa.gov/pesticides/chem_search/ppls/038526-00001-19950117.pdf

    Excerpts:
    For disinfecting non-critical devices/medical equipment and other surfaces:

    Spray/apply Cavicide directly to surface, thoroughly wetting area to be disinfected. (Visibly soiled surfaces should be pre-cleaned.)
    Allow surface to remain wet for 2 minutes. ( FOR TUBERCULOCIDAL ACTIVITY: Allow surface to remain wet for 10 minutes at room temperature (20'C).)

    Follow by wiping surface with a fresh, clean, paper or cloth towel; or rinse and either allow surface to air dry or wipe rinsed surfr.lce dry using a fresh, clean, paper or cloth towel. Discard towel. •

    Cavicide completely inactivates the HIV-1 (AIDS virus) on hard, non-porous surfaces in the presence of a moderate amount of organic soil (S% blood serum) with a contact time of 2 minutes at room temperature (20-2S'C) .
  9. Quats, at 200 ppm or less do not require rinsing. Follow the manufacturer's instructions. (Chen 2022)
  10. Hot water as disinfectant: For objects that can be immersed in hot water at 77°C or above, immerse for no less than 45 seconds. (Chen 2022)
  11. Iodine: at 25 ppm may be used for surface cleaning; follow the manufacturer's instructions. (Chen 2022)
  12. Hydrogen peroxide can damage some items such as cellphones, and may react with bleach to produce dangerous chlorine gas.
  13. Vinegar's disinfectant properties:

    Health Canada on Vinegar,

    also see David Suzuki's Foundation & "Does Vinegar Kill Germs" - https://davidsuzuki.org/
    Excerpt:
    Acetic acid (a.k.a. white vinegar) can act as a disinfectant that can destroy some bacteria and viruses.

    There is no scientific evidence or studies that show vinegar kills a virus like COVID-19.

    Studies confirming vinegar’s antibacterial properties:

    Household natural sanitizers like lemon juice and vinegar reduced the number of pathogens to undetectable levels.

    Vinegar can inhibit growth of and kill some food-borne pathogenic bacteria. Plus, vinegar’s bactericidal activity increased with heat! (Salt helped, too.)

    “The combined use of vinegar and sodium chloride, with use of an appropriate treatment temperature, was found to be markedly effective for the prevention of bacterial food poisoning.”

    Household disinfectants — vinegar and baking soda used on their own — were highly effective against potential bacterial pathogens but less effective than commercial household disinfectants.

    Note: Health Canada states, “Products such as tea tree oil, baking soda, vinegar, electrolyzed water, microfibre cloths, ozone, and silver compounds are not registered disinfectants for food premises, according to the Health Canada definition.”

Windex glass cleaner is not a disinfectant - cited & discussed at InspectApedia.com ... Windex multisurface disinfectant cleaner cited & discussed at InspectApedia.com

  1. Windex® Original glass cleaner, the blue liquid spray bottle shown above, contains ammonia but is not a disinfectant; the company provides other products that include disinfectants, including:

    Windex® Multisurface disinfectant cleaner, the lemon-yellow colored liquid and bottle shown above, is described by its manufacturer, SC Johnson Professional, as shown below.

    Instructions for using this disinfectant are at https://www.windex.com/en-us/products/disinfectant-cleaner-multi-surface

    Website excerpt:
    This product will clean and shine surfaces without any dull residue. When used as directed, it kills 99.9% of germs‡ and bacteria† on hard, non-porous surfaces. Great for cleaning bathrooms, kitchens, tiles, stainless steel, and more.

    ‡Staphylococcus aureus, Salmonella enterica, Pseudomonas aeruginosa, Streptococcus pyogenes, Rhinovirus Type 37 (common cold), Influenza A2/Hong Kong (Influenza)(H1N1) (flu) (virus), Influenza B †Staphylococcus aureus, Enterobacter aerogenes, Escherichia coli, Salmonella enterica, Listeria monocytogenes, Streptococcus pyogenes. Use pesticides safely. Always read label and product information before use.


    Windex® Multisurface DISINFECTANT CLEANER MSDS [PDF] S.C. Johnson & Son, Inc. 1525 Howe Street Racine WI 53403-2236 - this SDS shows that this product contains a combination of lactic acid and Ethyleneglycol Monohexylether, considered "non-hazardous" - excerpting: This product does not meet the criteria for classification in any hazard class according to regulation
    OSHA 29 CFR 1910.1200.


    Windex® Original Glass Cleaner MSDS
    [PDF] Op. Cit. also considered "not hazardous: - MSDS excerpts: This product does not meet the criteria for classification in any hazard class according to regulation
    OSHA 29 CFR 1910.1200 ... This product does not contain hazardous chemicals at or above a reportable level as defined by OSHA 29 CFR 1910.1200

    What are the ingredients in Windex Glass Cleaner? The MSDS for this product does not list its ingredients but states For additional information on product ingredients, see www.whatsinsidescjohnson.com.

    Really? Information about Windex Original glass cleaner is provided on the back-side of the label but we found that nearly impossible to read and impossible to peel away from the container. When the container is empty, of course, one can read its label-back text.

    Windex original glass cleaner is not listed at that company website, though we can find Windex® Commercial Glass Cleaner Formula 35*14153 that lists these ingredients and their purpose: WaterWater 2-Hexoxyethanol - Cleaning Agent, Isopropanolamine - Cleaning Agent, Ammonium Hydroxide - Cleaning Agent, Lauryl Dimethyl Amine Oxide - Wetting Agent, Sodium Dodecylbenzene Sulfonate - Wetting Agent, Fragrance, Liquitint® Sky Blue DyeDye

Cant' read information on the Windex Original Glass cleaner label - (C) InspectApedia.com ... Cant' read information on the Windex Original Glass cleaner label - (C) InspectApedia.com

  1. Consider simple soap and water for common surface cleaning.

Ineffective or Improperly-Used Products Sold, Promoted, as Surface Disinfectants

Ammonia (NH3), or ionized ammonia (NH4), a very widely-used cleaning product, is not a disinfectant, though ammonia is used in the production of "Quats" or QACs - quaternary ammonium compounds that are used as a disinfectant in many applications. Ammonia is widely used in household cleaning products including window cleaners, in part because mixed in water it both assists in cleaning and because it evaporates quickly.

Windex glass cleaner, one of our personal favorite glass and marble countertop cleaners, is also not a disinfectant, though its manufacturer, SC Johnson does provide other products that are used as surface disinfectants and cleaners.

Other products such as tea tree oil, baking soda, vinegar, electrolyzed water, microfibre cloths, ozone, and silver compounds are not registered disinfectants for food premises, according to the Health Canada definition. (Gaulin 2014, rev)

Watch out: the guidelines and purposes of cleaning or disinfecting building surfaces and the products suitable for use on building surfaces are quite different from those used to disinfect produce - things to be eaten by people or other animals.

Examples of such disinfectants taht are NOT safe for use on foods include concentrated bleach, rubbing alcohl, ethanol, quat-based cleaners, or Lysol.
See also

VEGETABLE or PRODUCE DISINFECTION

Research: Building Surface Disinfection & Soaks, Sprays, Washes



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