Does Lemon Juice Kill Mold?

Does lemon juice kill mold?

Yes, lemon juice certainly does kill mold because of its 5% acidic content. It’s also one of the most environmentally friendly ways of killing mold and works great on walls, carpets, fabric/clothing, and bathroom tiles.

Topics Covered

  • How to kill mold with lemon juice
    • The spray bottle method
    • The paste method
  • Conclusion

How to kill mold with lemon juice

The spray bottle method

The spray bottle method is excellent for spot removal as it works wonders on small areas of mold growth and for mold and mildew stains.

What you will need

All you need is a spray bottle and some lemon juice. You can get a bottle of 100% pure lemon juice from the store, or juice four to six lemons.

How to prepare

Preparation is straightforward, and all you have to figure out is how diluted you want your lemon juice remedy to be. You can fill the spray bottle up with nothing but lemon juice and use it as is. Alternatively, you could dilute it a bit by making a 50/50 or 25/75 mixture of water and lemon juice.

Just remember the purer your remedy, the more effective it will be.

If you want it even stronger, add a teaspoon of borax or baking soda to the spray bottle and shake it well.

How to use

Spray the cleaning solution onto the affected area and allow 10 minutes for it to saturate and for the mild acidic content to do its work. Afterward, spray again and rub it off with a damp cloth.

The paste method

Did you know that you can make a paste from lemon juice and salt/baking soda? The paste can be used for more hard to remove mold outbreaks that require a bit of scrubbing. Also, it works great on tile grout.

What you will need

One small saucer, a teaspoon, 100% pure lemon juice, some salt or baking soda and an old toothbrush.

How to prepare

Pour some salt or baking soda into a small pile onto the saucer. Add a few drops of 100% pure lemon juice until it becomes saturated. Stir it around with a spoon until it becomes a paste. Add more lemon juice or salt/baking soda if needed.

How to use

Spread the paste onto whatever surface you want to be cleaned and let it sit for 10 minutes. Afterward, scrub it in with an old toothbrush and rinse it off with water when finished.


Lemon juice is undoubtedly one of the most natural cleaners in the world and works great on small to medium-sized mold problems.

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