The house dust mite is a minute animal which lives in every house. The mites like to live in warm, damp, dark places where they are rarely disturbed and where food is provided. They feed on the scales of human skin which fall off as our skin is renewed. Consequently they mostly live in bedrooms, particularly with central heating, double glazing and fitted carpets. If you are allergic to the house dust mite, symptoms can be brought on by both live and dead mites and their droppings. Bedrooms should be made easy to clean.