Biological pollutants are generally living organisms or parts of living organisms. They are usually invisible and travel through the air. Some of the more common types of biological pollutants found in the home are animal dander, dust mites, cockroach parts, pollen, and bacteria and viruses. While this is probably a very unpleasant thought, the fact is that these substances are found in all homes so you will not be able to remove them completely.
Some conditions, however, support the growth of these biological pollutants, making them a lot worse. These are moisture and nutrients. You will often find these conditions in humid areas such as bathrooms and damp basements, also appliances like air conditioners and humidifiers. Modern construction methods and their materials can also become a contributing factor when it comes to biological pollutants in the home. The reason is that these are designed to prevent a lot of outside air from entering the home which can result in higher levels of moisture inside.
After reading this brief article you may be wondering how to determine whether or not biological pollutants are causing some of your health issues. We will consider this question in the following article.