Can You Mix Vinegar and Hydrogen Peroxide to Kill Mold? Here’s What You Need to Know  

moldy wall

Mold is a common problem in households and can pose health risks if not addressed promptly. Vinegar and hydrogen peroxide are two household items that are often recommended for cleaning mold, but combining them can be dangerous. 

In this article, we’ll explore why mixing vinegar and hydrogen peroxide can be harmful and offer alternative methods for using these cleaning agents safely and effectively.

Let’s begin.

Why You Shouldn’t Mix Vinegar and Hydrogen Peroxide to Kill Mold

Mixing vinegar and hydrogen peroxide can create a harmful chemical reaction that produces peracetic acid. This can irritate the eyes, skin, and respiratory system and cause serious health problems, particularly for those with asthma or other respiratory conditions. Therefore, it is essential to never mix vinegar and hydrogen peroxide.

Using Vinegar to Clean Mold

Vinegar is a mild acid that can kill many types of mold. To use vinegar to clean mold:

  1. Pour undiluted vinegar into a spray bottle.
  2. Spray the vinegar directly on the moldy area.
  3. Allow the vinegar to sit for an hour to penetrate the mold.
  4. Scrub the area with a brush or sponge to remove the mold.
  5. Wipe the surface with a clean cloth.

Using Hydrogen Peroxide to Clean Mold

Hydrogen peroxide is a powerful oxidizer that can break down mold and remove it from surfaces. To use hydrogen peroxide to clean mold:

  1. Pour undiluted hydrogen peroxide into a spray bottle.
  2. Spray the hydrogen peroxide directly on the moldy area.
  3. Allow the hydrogen peroxide to sit for 10-15 minutes to penetrate the mold.
  4. Scrub the area with a brush or sponge to remove the mold.
  5. Wipe the surface with a clean cloth.

Using Vinegar and Hydrogen Peroxide Alternately

While it is not safe to mix vinegar and hydrogen peroxide, you can use them alternately to clean mold. Here’s how you can do it:

  1. Start by using vinegar to kill the mold. Vinegar is an acid that can kill many types of mold, and it is a safer alternative to harsh chemicals. Pour undiluted vinegar into a spray bottle and spray it directly on the moldy area. Allow the vinegar to sit for an hour to penetrate the mold.
  2. After an hour, rinse the surface thoroughly with water to remove any remaining vinegar. This step is important because vinegar and hydrogen peroxide should never be mixed together.
  3. Next, use hydrogen peroxide to remove any remaining mold stains. Hydrogen peroxide is a powerful oxidizer that can break down mold and remove it from surfaces. Pour undiluted hydrogen peroxide into a spray bottle and spray it directly on the moldy area. Allow the hydrogen peroxide to sit for 10-15 minutes to penetrate the mold.
  4. Scrub the area with a brush or sponge to remove any remaining mold stains. Wipe the surface with a clean cloth.
  5. Repeat the process if necessary until the mold is completely removed.

Important Reminders:

Before using vinegar and hydrogen peroxide to clean mold, it’s important to spot-check the surface first. While vinegar and hydrogen peroxide are generally safe for most surfaces, some materials may be damaged by these substances. 

Always test a small, inconspicuous area of the surface first to make sure that it is not affected by vinegar or hydrogen peroxide. If you notice any discoloration, warping, or other damage to the surface, do not continue to use vinegar or hydrogen peroxide on it. Instead, consider using a different cleaning method or consult a professional mold remediation specialist.

Additionally, be sure to wear gloves and protective eyewear when cleaning mold to avoid skin and eye irritation. Do not mix vinegar and hydrogen peroxide together, as this can create a dangerous chemical reaction.

Conclusion:

In conclusion, it’s important to avoid mixing vinegar and hydrogen peroxide to clean mold due to the dangerous chemical reaction that can occur. 

However, you can use these cleaning agents separately or alternately to kill and remove mold effectively. Always take safety precautions, such as wearing gloves and protective eyewear, when cleaning the mold. 

For more tips on cleaning mold, check out our guide on How to Clean Mold Off Bathroom Ceiling with Vinegar. 

Thank you for reading!

-Baking Soda Guy

Image by 👀 Mabel Amber, who will one day from Pixabay