4 most dangerous molds growing indoors + How Bio-One can help you remove them!

Mold is very common in outdoor and indoor environments. Outdoors, mold is part of the natural ecosystem, as it helps decompose dead organic matter (e.g. leaves, dead trees, animals) so, we’re always in the presence of mold. 


Now, while mold is inevitably present in indoor environments, the impact that it will have on your health will depend on how mold is controlled. Mold needs water or moisture to grow and disseminate, so it’s important to promptly fix any water-related issues like leaky pipes, leaks on the roofs, windows, and other areas in your house or property.


Controlling the humidity and moisture levels inside the house or property is the most efficient way to prevent mold from growing and causing problems to our health and deterioration to our home. Bio-One of Oceanside, Micro Certified Mold Remediation Contractors, are sharing the 4 most dangerous types of Mold that grow in Indoor Environments and how Bio-One of Oceanside specialists can help you remove and remediate your house or property from them.

Image shows black mold and other mold causing damage to a ceiling board and wooden structure.



Stachybotrys chartarum is commonly known as “black mold” and it’s one of the most dangerous and common types of mold in indoor environments. This type of mold can grow in organic materials like fiberboard, carton board, gypsum board, wallpaper, and others. 


The combination of moisture and these organic materials makes up for the perfect place for mold to quickly grow and disseminate. Mold feeds from the surface where it’s growing, to the point of consuming it. This represents a structural safety risk for your house or property. Bio-One of Oceanside technicians have assisted properties where the foundations have experienced deterioration from mold damage, so it’s imperative that you attack mold from the moment you see signs of damage.


Stachybotrys chartarum can also have severe health repercussions, especially for people suffering from pre-existing conditions. Continuous exposure to “black mold” can cause diarrhea, flu-like symptoms (runny nose, sneezing, and coughing), and other respiratory problems.


Bio-One of Oceanside specialists can help you assess the level of damage in your house and property and, using EPA-approved chemicals, and follow strict guidelines to remediate areas impacted by mold.



Aspergillus is another type of mold, present in both outdoor and indoor environments. It’s common for people to breathe Aspergillus spores every day, so it’s not considered a threat for humans. However, when Aspergillus spores concentrate in small, dark, indoor environments, it can cause respiratory problems for people who have pre-existing medical conditions. 


Aspergillus is the cause of Aspergillosis, an infection that affects people with a weakened immune system. Aspergillosis infection signs include constant allergies, lung infection (which translates into difficulty breathing), and infection in other parts of the body. There are multiple types of Aspergillosis, each affecting the body differently. To learn more about the different types of Aspergillosis Infection, you can visit CDC’s article on Aspergillosis here.

Image is a close up of black mold and other mold causing damage to a ceiling board and wooden structure.

Bio-One of Oceanside technicians are professionally trained to remediate areas from mold damage. Our technicians evaluate the area with special equipment to guarantee a successful removal of mold in your house or property.




Like Aspergillus, this type of mold is very common, present in both outdoor and indoor environments. Outdoors, Penicillium plays an important role in the natural environment, as it’s responsible for processes like food spoilage. In Indoor environments, however, represents a high risk of allergy and other pathologies, and spores can easily travel through the air and contaminate poorly stored food and other household supplies. 


Penicillium is particularly difficult to address in indoor environments because it only requires a minimum level of humidity to grow. Like most types of mold, it will feed and consume the organic matter from where it’s growing and, it can have repercussions on people struggling with allergies and other respiratory problems.


Mold removal and remediation should be done by Professionals. Inadequate mold remediation can lead to more severe health problems and complete damage to building structures and items. Bio-One of Oceanside is a Micro Cerfified Mold Remediation Contractor, our Team of Specialists is trained to contain and remove mold from affected areas. They will also take care of disposing of any items infested with mold, guaranteeing a safe, hazard-free environment.

Image shows another angle of the same area where black mold and other mold is causing damage to a ceiling board and wooden structure.



Chaetomium is similar to Stachybotrys chartarum, in the sense that they both can fit into the category of “black mold” because they share the same conditions to grow. Chaetomium is very common in damp areas and areas where there’s water damage. 


Like most types of mold, Chaetomium is disseminated through spores that travel in the air, quickly growing in organic matter with moisture, like drywall, paperboard, carpet, and flooring. 


Chaetomium mold has a distinctive black-ish appearance, similar to Stachybotrys chartarum, and the smell is very musty. If your house or property has experienced water damage from flooding, leaks, or broken plumbing, it’s important to remove and take out any items that might be moist (like carpets or furniture). 


If you see any signs of black mold growing in your walls, floor, or other areas, do not hesitate to call a professional. Mold is very persistent and sometimes, it can grow in the darkest and most complex areas. Bio-One of Oceanside Specialists will make sure to thoroughly inspect your house or property to remediate areas where might be present.  




If you’re struggling with mold in your house or property, let Bio-One of Oceanside help you. We are Micro Certified Mold Remediation Contractors, which means that our team is trained to assess the level of damage and, following cautious procedures, they can properly clean and remediate mold from any affected areas. 


Sometimes, mold remediation entails tearing out and reconstructing, but your well-being makes up for any reparation that might come with removing mold from your house or property.


We are proud to serve the North County area: Oceanside, Carlsbad, Vista, Fallbrook, Escondido, San Marcos, and Bonsall; we also serve the Southern Orange County area: San Clemente, Dana Point, Rancho Mission Viejo, Laguna Niguel, Ladera Ranch, San Juan Capistrano, Aliso Viejo, Laguna Woods, Laguna Beach, Lake Forest, Rancho Santa Margarita, Irvine, and Costa Mesa.


Give us a call at Bio-One: 760-891-5819. We offer FREE ESTIMATES for our services, AVAILABLE 24/7, 365 days a year.



We are proud members of the Southern California Rental Housing Association and the Carlsbad, Oceanside, and Vista Chambers of Commerce!

request a service