"Can Hand Sanitizer Clean Surfaces?

In the wake of the COVID-19 pandemic, hand sanitizers have become a staple in our daily lives. But can these alcohol-based gels and rubs also be used to disinfect surfaces? Let's delve into this question, exploring the science behind hand sanitizers, their effectiveness on surfaces, and the best practices for surface disinfection.

Understanding Hand Sanitizers

Hand sanitizers work by killing germs on your hands through friction and the action of the active ingredients, usually alcohol. The most common types are alcohol-based, containing either ethanol (60-95%), isopropanol (60-91%), or both, along with small amounts of other ingredients like glycerin and hydrogen peroxide. They are effective against a wide range of viruses and bacteria, including the novel coronavirus.

Can Hand Sanitizers Disinfect Surfaces?

While hand sanitizers are effective at killing germs on your hands, their effectiveness on surfaces is less clear-cut. Here's why:

• Surface Type: Different surfaces have varying porosities and textures. Some surfaces, like porous ones (e.g., wood, fabric), may absorb the alcohol, reducing its disinfecting power.
• Residual Effect: Hand sanitizers don't leave a residual effect on surfaces. This means they only kill the germs they come into contact with and won't continue to kill germs after the surface has dried.
• Concentration: Hand sanitizers are typically less concentrated than surface disinfectants. The alcohol concentration in hand sanitizers (around 60-95%) is lower than in surface disinfectants (up to 99%).

However, in a pinch, using a hand sanitizer with at least 60% alcohol can help disinfect surfaces until a proper surface disinfectant is available. It's essential to remember that while hand sanitizers can kill germs on surfaces, they are not designed for this purpose and may not be as effective as dedicated surface disinfectants.

Best Practices for Surface Disinfection

To effectively disinfect surfaces, the Centers for Disease Control and Prevention (CDC) recommends using EPA-registered household disinfectants. These products have been tested and proven effective against COVID-19 and other viruses. Here's how to use them:

• Wear gloves to protect your hands.
• Wet the surface with the product, following the instructions on the label.
• Let it stand for the recommended time (usually 3-5 minutes).
• Rinse and dry surfaces as needed.
• After disinfection, wash your hands thoroughly with soap and water for at least 20 seconds.

When to Use Hand Sanitizers on Surfaces

While hand sanitizers aren't the first choice for surface disinfection, they can be used in specific situations:

• When a surface is visibly clean and you need to disinfect it quickly.
• When a dedicated surface disinfectant is not available.
• When you're out and about and need to disinfect surfaces before touching them (e.g., when using public restrooms).

In these cases, apply the hand sanitizer to a clean cloth or paper towel and wipe the surface. Ensure you're using a hand sanitizer with at least 60% alcohol for maximum effectiveness.

Safety Considerations

Always follow the manufacturer's instructions when using any cleaning product. Never mix different cleaning products, as this can create harmful fumes. Keep cleaning products out of reach of children and pets, and store them safely.

While hand sanitizers can be used on surfaces in a pinch, they are not a replacement for dedicated surface disinfectants. Always choose the most appropriate product for the job to ensure effective and safe disinfection.