Common House Dust Mite

Indoor environments, specifically within household dust, bedding, upholstery, and carpets where humidity is high.

Mainly consists of dander (dead skin flakes) shed by humans and pets, as well as some mold and fungi.

They thrive in warm, humid conditions (70-80% humidity). They go through a life cycle of egg, larva, protonymph, tritonymph, and adult over about 3 to 4 weeks.

They do not bite or spread disease, but their feces and body parts contain proteins that are major triggers for asthma and allergic reactions in humans. They play a minor ecosystem role in breaking down organic detritus.