Quietly lurking within those dust bunnies under our beds, inside sofas and carpet are creatures too small to see without a microscope or strong magnifying glass. Dust mites are arachnids, the class of arthropods which includes spiders, scorpions and ticks. Dust mites feed on dead skin that sloughs from our bodies (and probably potato chips & cookie crumbs). They live their whole lives in dark corner dust bunnies: hatching, growing, eating, defecating, mating, laying eggs.
It's their bathroom habits that make us itch and wheeze. Many people develop severe allergies to dust mite droppings. Lie on a rug where they live and you might get itchy red bumps on your skin. Breath in dust and you may have more serious symptoms like difficulty breathing or even a severe asthma attack.