There are a wide range of particulates that can be found in the air in a residential home, including both natural and man-made materials. Some common types of particulates that may be present in the air in a home include:

• Dust: Dust particles are small, dry particles that can be found in the air and on surfaces throughout a home. Dust is made up of a variety of materials, including fibers from clothing and fabrics, skin cells, pet dander, and pollen.
• Mold spores: Mold is a type of fungus that can grow on a variety of surfaces, including walls, ceilings, and furniture. Mold spores are small, lightweight particles that can be found in the air, and they can cause allergic reactions and respiratory problems in some people.
• Pollen: Pollen is a fine, powdery substance that is produced by plants and is released into the air. Pollen can cause allergic reactions in some people, such as sneezing, itchy eyes, and runny nose.
• Pet dander: Pet dander is a type of fine particle that is shed from the skin and fur of animals, such as dogs and cats. Pet dander can cause allergic reactions in some people and can be difficult to remove from the air.
• Bacteria and viruses: Bacteria and viruses are small, single-celled microorganisms that can be found in the air and on surfaces throughout a home. Some types of bacteria and viruses can cause infections and other health problems in humans.
• Smoke and other pollutants: Smoke and other pollutants, such as chemicals and fumes, can be found in the air in a home, especially if there are sources of combustion, such as tobacco products, fireplaces, or wood stoves. These particulates can be harmful to human health and can cause respiratory problems.

It is important to note that the presence of these particulates in the air is not necessarily a cause for concern, as the human body is generally able to filter out most of these particles and protect against their harmful effects. However, if you are concerned about the air quality in your home, there are a number of things that you can do to help improve it, such as using air purifiers or other air cleaning devices, keeping the home well-ventilated, and minimizing the use of products that can release harmful particulates into the air.