These tiny mites are most abundant in warm, humid areas. Contrary to popular belief, house dust mites do not bite or sting. They feed on shed human skin scales that collect in the dust on furniture, particularly mattresses, and on carpeting below beds. House dust mites are importance medically because they produce allergens in their secretions and excrement. Inhalation of dust containing mite feces and cast skins is a common cause of asthma in young children.
Sanitation is the key to reducing house dust mite populations.
Frequent and thorough vacuuming removes mites and the organic debris on which they feed. You can reduce conditions favorable to mite development through routine maintenance of air conditioner filters and by lowering humidity indoors. Encasing mattresses and pillows in plastic covers and frequent changing of bed linen also help prevent mite populations from building up. Its use should be considered only for severe infestations. Although mites are extremely small, they are usually detectable with the unaided eye.