Are Ants Attracted To Mold? Explanation & Treatment

Ants are fascinating creatures that play various roles in ecosystems. They are known for their foraging behavior and ability to detect food sources. One intriguing question is whether ants are attracted to mold. 

In this article, we will explore the relationship between ants and mold, the reasons behind their attraction, how ants detect mold, the types of mold that attract ants, dealing with ant infestations in moldy areas, and effective prevention methods.

Ants have a complex relationship with mold. While not all species of ants are attracted to mold, some have shown a particular affinity for it. Mold serves as a potential food source and can provide necessary moisture for ant colonies. 

Understanding why ants are attracted to mold requires examining their feeding habits and behavioral patterns.

Are Ants Attracted To Mold

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Are Ants Attracted To Mold?

Ants are attracted to mold for several reasons. First, mold produces organic compounds that ants find appealing. These compounds can be rich in nutrients and serve as a potential food source for the ants. 

Second, mold often grows in damp environments, which can provide ants with the moisture they need to survive. Lastly, mold can create favorable conditions for other insects, such as springtails or mites, which ants prey upon as part of their diet.

How Ants Detect Mold

Ants possess a highly developed sense of smell, which allows them to detect the presence of mold. They use specialized chemoreceptors located on their antennae to sense and identify chemical compounds emitted by mold colonies. 

This sensitivity to chemical cues helps ants locate potential food sources and determine if mold is present.

Types of Mold That Attract Ants

Certain types of mold tend to attract ants more than others. Among the most commonly reported molds associated with ant attraction are Cladosporium, Penicillium, Aspergillus, and Alternaria. 

These molds often thrive in damp environments, such as basements, bathrooms, or areas with water damage. Their presence can significantly increase the likelihood of ant infestations.

Ants and Mold Infestations

When ants discover a moldy area, they may establish trails leading to the source of mold. They communicate through pheromones, leaving chemical signals for other ants to follow. 

This behavior can lead to the formation of large ant colonies in areas with significant mold growth. The presence of ants in mold-infested spaces can be a sign of underlying moisture issues or structural damage that needs to be addressed.

The Connection between Ants and Mold Infestations:

Attracted to Moisture: Ants are attracted to moisture-rich environments, which are also conducive to mold growth. Mold spores require moisture to thrive and reproduce. 

As ants search for water sources, they often come across damp areas with mold infestations, making them more likely to stay and establish colonies.

Feeding Habits: Certain ant species, such as sugar ants or odorous house ants, are particularly attracted to sugary substances. Mold colonies produce a sugary substance known as honeydew, which ants feed on. 

In exchange, ants help spread mold spores to new areas, facilitating the mold’s growth and expansion.

Shelter and Nesting Sites: Mold-infested areas provide ants with suitable nesting sites and shelter. As mold breaks down organic matter, it creates cavities and crevices that ants can utilize for their nests. 

The presence of mold offers ants protection and a favorable environment for their colonies to thrive.

Negative Effects of Ants and Mold Infestations:

Structural Damage: Ants can cause structural damage to buildings by excavating wood or compromising the integrity of wooden structures. Some ant species, like carpenter ants, are particularly destructive as they tunnel through wooden materials, potentially weakening them over time.

Health Risks: Mold infestations pose health risks to humans, as exposure to mold spores can trigger allergic reactions and respiratory problems. Additionally, ants can contaminate food and surfaces, posing a threat to food safety and hygiene.

Prevention and Control of Ants in Moldy Areas

To prevent and control ants in moldy areas, it is crucial to address the underlying moisture problem. Repairing leaks, improving ventilation, and reducing humidity levels can discourage mold growth and subsequently deter ants. 

Identify and Address Moisture Issues:

One of the primary reasons for mold growth is excessive moisture. It is important to identify and address any moisture issues in the affected area. Repair leaks in plumbing or roofing, improve ventilation, and use dehumidifiers to reduce humidity levels. 

By eliminating excess moisture, you can discourage mold growth and minimize the attractiveness of the area to ants.

Clean and Remove Mold:

Regular cleaning and mold removal are vital to prevent ant infestations. Use a solution of water and detergent to clean moldy surfaces. Remember to wear protective gear such as gloves and masks while handling mold. 

Once the mold is cleaned, allow the area to dry completely. Dispose of any contaminated materials properly to prevent re-infestation and minimize ant attraction.

Seal Entry Points:

Ants can enter through even the tiniest cracks and openings. Seal all potential entry points, including gaps around windows and doors, utility lines, and foundation cracks. 

Use caulk or weatherstripping to seal these openings effectively. By blocking access, you can prevent ants from infiltrating moldy areas in the first place.

Maintain a Clean Environment:

A clean environment is less likely to attract ants. Keep mold-prone areas clean and dry to discourage both mold growth and ant infestations. Regularly sweep, vacuum, and mop the floors. 

Wipe down surfaces with a mild disinfectant to remove any food particles or residue that might attract ants. Store food in airtight containers, promptly clean spills, and maintain good sanitation practices in kitchens and other susceptible areas.

Use Natural Ant Deterrents:

Several natural remedies can help deter ants from entering moldy areas. These include:

Vinegar: Create a solution by mixing equal parts of water and vinegar. Spray it along ant trails, entry points, and moldy areas. The pungent smell of vinegar repels ants.

Citrus peels or essential oils: Place citrus peels or a few drops of citrus essential oils near entry points and mold-infested areas. Ants dislike the scent of citrus, making it an effective deterrent.

Cinnamon: Sprinkle cinnamon powder in areas where ants are frequently spotted. It disrupts their scent trail and discourages them from entering the space.

Diatomaceous earth: Sprinkle a thin layer of food-grade diatomaceous earth near entry points and areas prone to ant activity. This natural powder damages the ants’ exoskeleton and dehydrates them, leading to their demise.

Professional Pest Control:

In severe infestations or persistent ant problems, it may be necessary to seek professional pest control services. Pest control experts can assess the situation, identify ant colonies, and employ targeted treatments to eliminate the infestation effectively. 

They may also offer preventive measures to ensure long-term ant control in moldy areas.


In conclusion, ants are indeed attracted to mold, primarily due to the organic compounds produced by mold colonies and the favorable conditions they create. 

Mold provides ants with a potential food source and necessary moisture, making it an appealing habitat for them. 

Understanding the relationship between ants and mold is essential for addressing ant infestations in moldy areas and implementing effective prevention strategies.

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Frequently Asked Questions (FAQs)

Can ants cause mold?

No, ants do not directly cause mold. However, their presence in moldy areas can indicate underlying moisture issues that contribute to mold growth.

Are all ants attracted to mold?

No, not all ants are attracted to mold. Certain species of ants have shown a particular affinity for mold, while others may have different preferences for food sources.

How do I know if ants are attracted to mold in my home?

If you notice ants gathering around moldy areas or forming trails leading to them, it is likely that the ants are attracted to the mold present.

Can mold damage ant colonies?

In some cases, mold can damage ant colonies by affecting their food sources or creating unfavorable conditions. However, ants have adapted mechanisms to deal with mold, such as removing mold-infested materials from their nests.

Is it necessary to seek professional help for ant infestations in moldy areas?

While DIY methods can be effective in some cases, persistent ant infestations in moldy areas may require professional pest control services to ensure thorough eradication.

Kristen Park - Specialised Content Writer for Caresh Fresh

My name is Kristen Park and I am a senior writer specialising in how-to guides and home cleaning information at Cares Fresh. As a researcher, I take pride in digging deep to find every small detail on a topic and explaining it in a way that is easy for the reader to understand.