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Mold is a common problem in homes, and it can be difficult to remove. There are many different types of mold, and each type requires a different removal process. Here are the 6 most common types of mold found in homes, along with tips on how to remove them.


Allergens are substances found in the environment that cause allergic reactions in some people. These reactions can range from uncomfortable to life-threatening, from a mild sneezing fit to anaphylaxis. Common allergens include pollen; dust mites; pet hair and dander; and certain foods, such as milk, nuts, eggs, soy, and wheat products. Identifying what type of allergen is causing a reaction in someone requires a thorough evaluation of the patient’s symptoms, potential allergens in their environment that could be triggering the reaction, and a series of allergy tests. With accurate diagnosis, it may be possible to avoid or manage exposure to the allergen and reduce the severity of any allergic reactions.


Pathogens are microscopic organisms that cause disruption and illness. While those that come to mind first may be the more intense viruses, like Ebola, it is important to note that even milder illnesses such as influenza are caused by pathogenic agents. Be aware of potential exposures, practice good hygiene habits, and promptly address any symptoms in order to mitigate the spread of disease and help keep yourself and others safe from these potentially disruptive pathogens.


Toxigenic refers to the capacity of certain substances, such as microorganisms and their products, to produce toxins. These toxins can be dangerous both to humans and animals, causing serious health maladies if they are ingested in sufficient quantities. Thankfully, advances in medical science have allowed us to identify many of these toxigenic compounds, so that we can warn people of their dangers and take precautions to protect ourselves. In addition, understanding the characteristics of these substances helps scientists develop interventions that reduce their presence and improve our overall health.


Cladosporium is a type of fungi that can often be seen growing on damp and moist surfaces such as shower curtains, walls, Plant containers and even clothing. This type of fungi is spread through air-borne spores or particles, making it difficult to prevent its growth. Cladosporium tends to suffer in dry conditions, thus it can’t survive when little moisture is present in the atmosphere. Most Clado species do not pose any serious health threats but they can be allergenic if you are exposed in large amounts. Allergic reactions may range from moderate to severe so it is important to clean and disinfect any surfaces where Cladosporium might have taken hold.


Aspergillus is a type of mold that occurs everywhere moisture exists – in soil, plants, and walls – even where environments are nutrient-depleted. There are over 200 species of Aspergillus that exist, but only some are known to cause disease, most commonly in the breathing passages. This can lead to a variety of problems including sinusitis, allergic responses, infections of the lung and lower respiratory tract, as well as more dreaded issues. People with weakened immune systems or existing respiratory conditions are especially susceptible and need to be aware of the risks associated with prolonged exposure to Aspergillus spores. Fortunately, limiting exposure is usually enough for healthy individuals to avoid any serious health complications.


Penicillium is a type of fungus found commonly in food, fabrics, and other organic items. It can cause a range of health effects depending on the variety, including allergies and respiratory problems. While effective sanitizing techniques can keep the organism under control, it’s important to be aware of its presence and identify ways to prevent it from taking hold. In food, careful storage and cooking practices can help inhibit Penicillium growth, while good air circulation helps reduce numbers in an indoor environment. Regular cleaning and laundering of fabrics subject to humidity also decreases the odds of hazardous levels developing inside your home.

Three More Dangerous Types of Mold in Your Home

It is important to note the various types of mold that can be found in homes or other buildings that vary in severity. Aspergillus, Cladosporium, Penicillium, Alternaria, Stachybotrys chartarum and Fusarium are all forms of mold that can have significant health effects. While some molds such as Cladosporium or Penicillium may not cause major respiratory problems, other forms like Stachybotrys chartarum – commonly referred to as black mold – can have serious consequences for those exposed. It is important for those living in these environments to stay aware of any potential health risks associated with these molds by regularly maintaining good indoor air quality and keeping an eye out for any telltale signs of mold growth. By doing this, people can ensure that they and their loved ones stay healthy and safe from potential environmental health threats.

Alternaria mold in the basement of home at South Bend, IN


Alternaria is a type of mold that commonly grows outside in warm, humid environments such as dead plant material, soil and compost. Unfortunately, it can also make its way indoors where it can cause all sorts of respiratory problems. It appears as greenish or brownish spots or fuzzy-like growth and often times produces a musty, outdoor odor. Indoor exposure to Alternaria can lead to hay fever, asthma attacks and other allergic reactions in people with weakened immune systems or underlying conditions. To keep yourself safe from this type of mold, avoid contact when outdoors and make sure to dry out wet surfaces quickly before any mold has a chance to grow indoors.

Stachybotrys chartarum mold on the wall in home at South Bend, IN

Stachybotrys Chartarum

Stachybotrys chartarum, better known as “black mold”, is one of the most hazardous types of mold out there. It can cause a wide range of adverse health effects which differ depending on the severity and duration of exposure and an individual’s sensitivity to it. Generally, short-term exposure can result in symptoms such as coughing, headaches, skin itching or irritation, and watery eyes; whereas long-term exposure may lead to much more serious issues such as fever, bleeding lungs, and even mental confusion. Therefore, it is important that people take measures to minimize their risk of being exposed to this hazardous type of mold. If a problem with black mold is suspected, it is best to contact a specialist for help.

Fusarium fungus in wall at South Bend, IN


Fusarium is a fungus commonly found in moist areas with warm temperatures. It often affects grain crops, but can also be found in indoor environments such as humidifiers and carpeting. Due to its environmental preferences, Fusarium thrives in homes that have poor ventilation and the ability to retain moisture. Symptoms of exposure to Fusarium include skin rashes, fever, headaches and other flu-like symptoms. It’s important to take preventive measure against Fusarium by regularly cleaning moist areas as well as frequently changing the filters in any humidifiers you may have in your home. Taking these precautions will ensure you stay healthy while keeping your indoor environment relatively fungi-free.