Common dust mite

Indoor environments, specifically within bedding, carpets, upholstered furniture, and dusty areas with high humidity.

Primarily feed on dead human skin cells (dander) shed into environment, as well as some molds and fungi.

They prefer warm, moist environments and dark spaces. Their life cycle lasts about 65–100 days; they do not bite humans but thrive where humans spend time.

Major source of allergens. Enzymes in their faces and decaying body parts can trigger asthma, eczema, and allergic rhinitis in sensitive individuals. They have no significant benefits to humans.