Can Apple Cider Vinegar Kill Mold?

Mold is a common household nemesis that can wreak havoc on our properties and health.

This unwelcome guest not only damages surfaces and belongings but can also trigger allergies and respiratory issues. 

In the battle against mold, people have turned to various remedies, and one natural solution that has gained significant attention is apple cider vinegar. 

In this article, we’ll explore the properties of this seemingly miraculous substance and see if it has the potential to actually kill mold.

What Is Apple Cider Vinegar?

Apple cider vinegar, often abbreviated as ACV, is a type of vinegar made from fermented apple juice. It is a versatile and natural product, widely used for culinary, cleaning and health purposes.

To better understand what apple cider vinegar is, let’s break down its composition and the process of making it.

Composition Of Apple Cider Vinegar

Apple cider vinegar consists mainly of acetic acid which gives it its characteristic sour taste and pungent smell. It also contains trace amounts of other organic acids such as malic, citric and lactic acid. 

In addition to these, ACV contains various nutrients, enzymes and beneficial bacteria which all contribute to its potential health benefits.

How Apple Cider Vinegar Is Made

The process of making apple cider vinegar involves two major steps: fermentation and acidification.

In fermentation, fresh apples are crushed to extract their juice which is then mixed with natural sugar sources like honey or sugar. Yeast is added to this mixture, initiating the fermentation process. 

The yeast converts the sugars into alcohol, producing hard apple cider.

In acidification, which is the next step, acetic acid bacteria (Acetobacter) are introduced to the hard cider. 

These bacteria convert the alcohol into acetic acid through a process called aerobic oxidation. 

The acetic acid concentration typically ranges from 4% to 8% in the final product. The liquid is then aged to develop its characteristic flavor and aroma.

After the completion of these steps, the resulting apple cider vinegar may be left unfiltered and unpasteurized, resulting in a cloudy appearance and a sediment which floats atop known as the “mother.” 

The “mother” is a collection of beneficial bacteria, enzymes, and proteins which some believe contribute greatly to the overall potential health benefits of ACV. 

Alternatively, the vinegar can be filtered and pasteurized for a clearer and more refined appearance.

Does Apple Cider Vinegar Kill Bacteria And Mold?

Yes, apple cider vinegar has antimicrobial and antifungal properties that can help kill bacteria and mold. The primary component responsible for this action is acetic acid, which constitutes the majority of apple cider vinegar.

Acetic acid is known for its ability to disrupt the cell membranes of bacteria and mold, leading to cell death. It can also denature proteins, rendering them nonfunctional, and alter the pH level of the environment, making it inhospitable for the growth of these microorganisms.

When it comes to mold, apple cider vinegar is effective against a variety of mold species, including common household molds like Aspergillus and Penicillium. 

The acidity of ACV alters the pH of the surface on which the mold is growing, creating an unfavorable environment that inhibits mold growth and eventually kills it.

However, it is essential to note that the effectiveness of apple cider vinegar in killing bacteria and mold may vary depending on factors such as the concentration of acetic acid, the type or strain of microorganism, and the environmental conditions. 

While ACV can be a useful natural alternative for minor mold issues, it may not be as effective as commercial mold removal products or professional mold remediation services for severe infestations or persistent mold problems.

What Are The Disadvantages Of Using Apple Cider Vinegar For Mold?

While apple cider vinegar (ACV) can be an effective natural remedy for minor mold issues, there are some disadvantages to consider when using it for mold removal.

  1. Limited effectiveness: ACV may not be as effective as commercial mold removal products or professional mold remediation services in addressing severe infestations or persistent mold problems. It may work well for small-scale mold issues, but it might not be sufficient for extensive mold growth or certain mold species.
  2. Potentially corrosive: The acetic acid in apple cider vinegar is acidic (as you can already tell from the name), which can be corrosive to certain surfaces and materials, especially if used undiluted. Prolonged exposure to ACV may damage wood, natural stone, and certain metals. It is essential to dilute the vinegar and test it on a small, inconspicuous area before applying it to any surface.
  3. Odor: Apple cider vinegar has a strong, pungent smell that some people might find unpleasant. While the odor usually dissipates after the vinegar dries, it may linger in confined or poorly ventilated spaces.
  4. Incomplete mold removal: Although apple cider vinegar can kill mold on the surface, it may not be as effective in addressing mold that has penetrated deep into porous materials like wood, drywall, or fabric. In such cases, replacing the affected material might be necessary to ensure complete mold removal.
  5. Potential skin and eye irritation: Undiluted apple cider vinegar can cause skin and eye irritation upon contact. Always wear gloves and eye protection when using ACV for mold removal, and rinse the area thoroughly with water after treatment to minimize the risk of irritation.

How To Use Apple Cider Vinegar For Mold?

Using apple cider vinegar (ACV) to treat mold is relatively simple, and it can be an effective solution for small-scale mold issues. Here’s a step-by-step guide on how to use apple cider vinegar for mold removal:


  • Apple Cider Vinegar
  • Water
  • Spray Bottle
  • Protective Gloves
  • Protective Eyewear
  • Scrub Brush Or Sponge
  • Clean Cloth Or Paper Towels

Preparation And Procedure:

Step 1: Dilute The Vinegar 

To prepare the mold-cleaning solution, mix one part apple cider vinegar with one part water in a spray bottle. This 1:1 ratio is generally effective for most surfaces, but you may need to adjust the concentration depending on the material and the extent of the mold issue. For more stubborn mold, you can use undiluted ACV, but be cautious as it may damage certain surfaces or cause discoloration.

Step 2: Put On Protective Gear

Before handling mold, put on protective gloves and eyewear to minimize the risk of irritation and exposure to mold spores.

Step 3: Test On a Small Area

Before applying the ACV solution to the entire affected area, test it on a small, inconspicuous spot to ensure it doesn’t cause discoloration or damage to the surface.

Step 4: Apply The Solution

Spray the diluted apple cider vinegar solution generously onto the moldy surface. Allow the solution to sit for at least 30 minutes to an hour to give the vinegar enough time to penetrate the mold and begin breaking it down.

Step 5: Scrub the Mold

After the waiting period, use a scrub brush or sponge to gently scrub away the mold from the surface. Be thorough but avoid excessive scrubbing, which could damage the material.

Step 6: Rinse and Dry

Once the mold has been removed, rinse the area thoroughly with water to remove any remaining vinegar residue. Use a clean cloth or paper towels to dry the surface completely, as moisture can contribute to future mold growth.

Step 6: Repeat If Necessary

If mold is still visible after the first treatment, repeat the process until the mold is entirely removed.

What Are The Other Cleaning Uses For Apple Cider Vinegar?

Apple cider vinegar (ACV) is a versatile and eco-friendly cleaning agent that can be used for various household cleaning tasks. Here are some of the other cleaning uses for apple cider vinegar.

  1. All-purpose cleaner: Mix equal parts ACV and water in a spray bottle for a natural, non-toxic all-purpose cleaner. Use this solution to clean countertops, appliances, windows, and glass surfaces.
  2. Disinfectant: ACV’s antimicrobial properties can help disinfect surfaces such as cutting boards, kitchen counters, and bathroom fixtures. Wipe the surface with undiluted apple cider vinegar and let it sit for a few minutes before rinsing with water.
  3. Odor neutralizer: To remove unpleasant odors, mix ACV with water in a spray bottle and spritz the solution in the affected area. You can also place a bowl of apple cider vinegar in a room to neutralize odors.
  4. Drain cleaner: Pour 1/2 cup of baking soda followed by 1 cup of apple cider vinegar down the drain. After 5-10 minutes, flush the drain with hot water to clear away clogs and deodorize the drain.
  5. Fabric softener: Add 1/2 cup of apple cider vinegar to your washing machine’s fabric softener dispenser to naturally soften clothes and remove detergent residue.
  6. Stain remover: For stubborn stains on fabric, carpet, or upholstery, mix equal parts ACV and water in a spray bottle. Spray the solution on the stain, let it sit for a few minutes, and then blot the area with a clean cloth.
  7. Lime and mineral deposit remover: To remove lime and mineral deposits from shower heads, faucets, or kettles, soak the affected area in a solution of equal parts ACV and water for at least 30 minutes, then scrub with a brush and rinse thoroughly.
  8. Dishwasher cleaner: Pour a cup of ACV into the bottom of your dishwasher and run it on a normal cycle to clean and deodorize the interior.
  9. Weed killer: Mix equal parts ACV, salt, and dish soap in a spray bottle. Spray the solution on weeds in your garden or driveway to kill them without using harsh chemicals.
  10. Brass and copper cleaner: Combine equal parts ACV and salt to create a paste. Apply the paste to brass or copper items, let it sit for a few minutes, and then rinse with water and polish with a soft cloth.

Remember to always test ACV on a small, inconspicuous area before using it on a new surface as its acidity may cause discoloration or damage to certain materials. Additionally, consider diluting the vinegar with water to minimize the risk of damage or irritation.

Which Vinegar Is Best For Killing Mold?

White vinegar, also known as distilled vinegar, is the best vinegar for killing mold due to its higher acetic acid content and more potent antimicrobial properties. Typically, white vinegar contains 4-7% acetic acid, whereas apple cider vinegar usually contains around 4-6%. The higher acidity of white vinegar makes it more effective in breaking down mold and inhibiting its growth.

When purchasing white vinegar for killing mold, opt for the “cleaning vinegar” variety which usually contains a higher content of acetic acid than cooking vinegar.

What Stops Mold From Spreading? And What Kills Mold Permanently?

To stop mold from spreading and prevent it from returning, you must address the underlying causes of mold growth which usually involve moisture and humidity issues. 

Here are some steps to stop mold from spreading and reduce the likelihood of it coming back:

Identify and fix moisture problems

Mold thrives in damp environments, so identifying and fixing the source of moisture is crucial. This may involve repairing leaks in pipes, roofs or walls, addressing condensation issues or improving ventilation in bathrooms, kitchens and laundry rooms.

Control humidity levels

Maintain indoor humidity levels between 30% and 50% to discourage mold growth. Use a dehumidifier or air conditioner to help regulate humidity and ensure proper ventilation in your home.

Dry wet materials promptly 

Dry any wet materials such as carpets, upholstery or clothing within 24-48 hours to prevent mold growth.

Clean and maintain surfaces

Regularly clean and maintain surfaces especially in areas prone to moisture such as bathrooms and kitchens. Use mold-resistant cleaning products and keep surfaces dry to discourage mold growth.

Use mold-resistant building materials

When renovating or repairing your home, consider using mold-resistant materials such as mold-resistant drywall and paint to help prevent mold growth.

Properly insulate your home

Proper insulation of your home can help prevent condensation and moisture buildup on walls, ceilings and floors.


While the above steps can help stop mold from spreading and reduce the likelihood of its return, it’s important to note that no method can guarantee permanent mold elimination. 

Mold spores are present in the environment, and complete eradication is nearly impossible. 

However, by addressing the factors that contribute to mold growth and maintaining a clean, dry environment, you can significantly reduce the chances of mold reappearing in your home.

For existing mold, removing it with appropriate mold-killing products such as white vinegar, hydrogen peroxide or commercial mold removal products can be effective. 

However, if you have a large or persistent mold problem, it’s recommended to seek professional mold remediation services to ensure the mold is thoroughly removed and the root cause is addressed.

Frequently Asked Questions

Does Apple Cider Vinegar Kill Mold Spores On Fruits And Plants?

Apple cider vinegar (ACV) has antimicrobial properties and can help inhibit the growth of mold on fruits and plants to some extent. However, its effectiveness depends on several factors, such as the type of mold, the extent of the mold issue and the concentration of acetic acid in the vinegar.

To use apple cider vinegar to prevent mold growth on fruits, mix 1 part ACV and 3 parts cold water in a bowl. Dip a clean cloth in the solution and gently wipe the fruit’s surface before rinsing it with clean water. Then dry thoroughly before storing.

This method may help remove mold spores and extend the shelf life of fruits.

To treat mold on plants, mix 2 tablespoons of apple cider vinegar with 1 quart (4 cups) of water in a spray bottle. Lightly mist the affected areas of the plant, ensuring that the solution doesn’t overly saturate the foliage as it may cause damage. 

ACV can be effective against some types of mold and mildew on plants, but it may not be sufficient for severe infestations or certain mold species.