In recent months, confusion has swirled around which disinfectants are truly effective for sanitization. To clarify, we draw on the ISS COVID-19 Report No. 19/2020 – Interim Recommendations on Disinfectants in the Current COVID-19 Emergency: Medical-Surgical Devices and Biocides (April 25, 2020). It is critical to understand that disinfection products (with specific antimicrobial properties) are distinct from detergents and sanitizers, which require no prior authorization but must comply with detergent regulations.
Medical-Surgical Disinfectants (PMC)
Commercially available PMCs for skin and surface disinfection in Italy are mostly based on active ingredients such as sodium hypochlorite, ethanol, propan-2-ol, quaternary ammonium compounds, chlorhexidine digluconate, hydrogen peroxide, biphenyl-2-ol, peracetic acid, and troclosene sodium. Many of these are effective against viruses.
Key Active Ingredients and Their Applications
- Ethanol (CAS 64-17-5) – PT1, PT2
- Chlorhexidine digluconate (CAS 18472-51-0) – PT1
- Didecyl dimethyl ammonium chloride (CAS 7173-51-5) – PT1, PT2
- Hydrogen peroxide (CAS 7722-84-1) – PT2
- N-(3-aminopropyl)-N-dodecylpropane-1,3-diamine (CAS 2372-82-9) – PT2
- Biphenyl-2-ol (CAS 90-43-7) – *PT1, *PT2
- Sodium hypochlorite (active chlorine) (CAS 7681-52-9) – *PT1, *PT2
- Troclosene sodium (CAS 51580-86-0) – PT2
- Peracetic acid (CAS 7722-84-1) – PT2
- Propan-2-ol (isopropyl alcohol) (CAS 67-63-0) – *PT1, *PT2
- Glutaraldehyde (CAS 111-30-8) – PT2
- Alkyl dimethyl benzyl ammonium chloride (CAS 68424-85-1) – PT2
Some PMCs are exclusively for professional use, requiring specific training and mandatory Personal Protective Equipment (PPE). These products are labeled “For professional use only.” Without this label, the product is intended for the general public.
Surface Disinfection: Best Practices
Given the potential for SARS-CoV-2 to survive on surfaces, frequent and thorough cleaning and disinfection of environmental surfaces is essential. Pay special attention to high-touch areas: door handles, bathroom surfaces, worktops, cell phones, tablets, computers, and frequently used objects.
Disinfectants Used by MD Disinfestations
Currently, the active ingredients we rely on for disinfection and sanitization interventions include sodium hypochlorite and quaternary ammonium compounds. For outdoor pest-related concerns, we also recommend exploring effective solutions for wildlife control, such as the best poison for raccoons to protect your property.
Choosing the Right Disinfectant for Your Needs
Selecting the correct disinfectant depends on the surface type, the target microorganism, and the required contact time. Always follow label instructions and ensure proper ventilation during application.
Professional vs. Consumer Products
- Professional-grade disinfectants often contain higher concentrations of active ingredients and require PPE.
- Consumer products are formulated for safe home use but must still be used as directed.
- Never mix disinfectants (e.g., bleach with ammonia) as this can produce toxic gases.
FAQ: Disinfection and Sanitization
1. What is the difference between cleaning, sanitizing, and disinfecting?
Cleaning removes dirt and impurities using soap and water. Sanitizing reduces germs to safe levels, while disinfecting kills nearly all pathogens on surfaces. Disinfection is the highest level of microbial control.
2. Can I use household bleach for disinfection?
Yes, sodium hypochlorite (bleach) is effective when diluted properly. For general disinfection, mix 1/3 cup of bleach per gallon of water. Always use fresh solutions and avoid mixing with other cleaners.
3. How long should disinfectants stay on surfaces?
Contact time varies by product. Most require a wet contact time of 5–10 minutes. Check the label for specific instructions. Do not wipe off prematurely.
4. Are natural disinfectants effective against viruses?
Some natural agents like hydrogen peroxide and ethanol are effective. However, products like vinegar or essential oils are not reliable for high-level disinfection against viruses like SARS-CoV-2.
5. How often should I disinfect high-touch surfaces?
At least once daily, and more frequently if someone in the household is ill or if there is high traffic. Focus on handles, light switches, remote controls, and bathroom fixtures.
For more insights on maintaining a safe environment, explore our guides on yard and outdoor care and home garden tips.
Author: Paulo Vivere