Dust mites thrive in warm, humid, dusty areas. Favorite habitats include mattresses, pillows, carpets, curtains, upholstered furniture, and stuffed animals.

The following strategies have been shown to cut down dust mite populations:

• Cover mattresses and box springs with airtight plastic or polyurethane covers.
• Wash pillows, sheets, and blankets weekly in hot water. Warm water will not kill mites. Toss stuffed animals in the hot cycle, too—or place them in the freezer.
• Replace carpeting, when possible, with tile or hardwood floors.
• Vacuum upholstery and carpets every week, using a double thickness bag and/or a high-efficiency vacuum (HEPA) filter.
• Dust with a damp cloth to pick up the most dust.
• Use a dehumidifier or air conditioner to lower humidity.