Microscopic dust mites are everywhere in the home – in our beds, clothing, furniture, book shelves and stuffed animals. For people with allergies or asthma, dust mites are a problem.  Vacuum mattresses and pillows. For people with sensitivities to dust mite allergens, dust mite bedding is available with zippered, allergen-impermeable encasings designed to block dust mites.  Wash bedding at 130F or higher. Detergents and commercial laundry products have no effect on mites unless the water temperature is high. Keep books, stuffed animals, throw rugs and laundry hampers out of the bedroom of allergy sufferers. Wash stuffed animals occasionally in hot water. Cover heating ducts with a filter which can trap tiny dust particles smaller than 10 microns. Avoid using humidifiers. Dust mites thrive on warmth and humidity.