Does Windex Kill Mold and Mildew in 2024?


Mold and mildew can be a nuisance in any home. They can grow on almost any surface and often give off an unpleasant odor. While many commercial products are available to help get rid of mold and mildew, some people may wonder if Windex could do the trick. In this blog post, we will take a closer look at whether Windex can kill mold and mildew and explore some of the pros and cons of using it for this purpose.

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Does Windex Kill Mold and Mildew

What is Windex? Does Windex Kill Mold and Mildew?

Windex is a famous glass cleaner that contains ammonia. Ammonia is known to be effective at killing mold and mildew. In fact, many commercial molds and mildew cleaners contain ammonia as their active ingredient. However, it’s important to note that Windex also contains other ingredients, such as alcohol, which can be dried to surfaces. This means that Windex may not be the best choice for cleaning mold and mildew if you’re concerned about damaging the surface.

Additionally, because Windex is designed for cleaning glass, it may not be as effective at penetrating porous surfaces like grout or drywall, where mold and mildew often hide.

One of the benefits of using Windex to kill mold and mildew is that it can be used on various surfaces. It’s also readily available and relatively inexpensive. However, there are some drawbacks to consider before using Windex to clean mold and mildew.

When cleaning mold and mildew with any product, it’s important to take precautions to avoid exposure to the spores. Mold and mildew spores can cause respiratory problems, so it’s important to wear masks and gloves when cleaning. You should also open windows and doors to ventilate the area.

Why Is Windex Toxic?

Many people are unaware that Windex is a toxic substance. The main ingredient in Windex is ammonia, which is a caustic chemical that can cause burns and respiratory irritation. In addition, Windex does not kill mold or mildew, and it can make these problems worse by creating an environment conducive to their growth. For these reasons, it is important to use Windex only in well-ventilated areas and avoid using it on surfaces that come into contact with food.

Will Ammonia Kill Mold?

Yes, ammonia can kill mold. The active ingredient in ammonia, ammonia hydroxide, is a powerful antibacterial and antifungal agent that can penetrate the membranes of fungal cells and disrupt their metabolism. In addition, ammonia can reach into hard-to-reach areas where mold may be hiding, effectively killing it at its source.

Thus, ammonia for mold removal effectively tackles rigid black molds on glass or other hard surfaces. However, it should be noted that ammonia should not be used to treat mold growth in porous materials like wood or fabric, as its fumes can damage these materials. So if you are looking for a reliable solution to remove black mold from your glass surfaces, ammonia could be a perfect choice!

Ammonia Vs. Bleach For Mold

When trying to remove mold from surfaces, there are many different cleaning products that you might consider using. Ammonia and bleach are two options and are often recommended as effective and inexpensive ways to eliminate mold. However, while ammonia is often touted as the better choice due to its ability to kill mold at a cellular level, it can also be hazardous if used in large quantities or without proper ventilation.

In contrast, bleach is generally considered less effective when killing mold, but it is also less toxic than ammonia. Ultimately, the best approach for eliminating mold depends on your individual needs and preferences, but both ammonia and bleach have their strengths and weaknesses when fighting mold on surfaces like glass or wood.

What Is The Best Chemical To Kill Mold?

There is no single “best” chemical to kill mold. Different chemicals can be effective at killing mold, depending on the circumstances. For example, bleach is a common household cleaner that can kill mold on surfaces like tile or porcelain. However, it is important to note that bleach does not penetrate porous surfaces like wood or drywall, so it will be less effective at killing mold that has grown inside these materials.

On the other hand, ammonia is a powerful antibacterial and antifungal agent that can penetrate grout or other porous surfaces where mold often hides. It is also more readily available than bleach and tends to be less toxic, making it an appealing option for many people.

Ultimately, there is no one “best” chemical for killing mold, as different situations may require different approaches. Choosing the best option will depend on a number of factors, such as the type of mold that needs to be killed, the surface where it is growing, and your personal preferences and safety concerns. However, with proper preparation and care, any chemical can be used effectively to kill mold and restore your home or other surfaces to their original condition.


Windex is a cleaning product that contains ammonia. Ammonia is a powerful antibacterial and antifungal agent that can kill mold. However, Windex also contains other chemicals that can be harmful if inhaled or ingested. For this reason, it is important to use Windex only in well-ventilated areas and avoid using it on surfaces that come into contact with food.