Fight The Mite...Dust mites are a fairly common allergen, and can be an irritant even for those who are not actually allergic. To decrease your exposure to the little critters, look to your bedroom. Is your mattress more than 10 years old? If so, think about investing in a new one. Try new pillows as well since those should probably be replaced every year or so. If you want to go all out, get rid of any carpets or drapes in that room and replace them with hard floors (tile, wood, etc.) and blinds. Basically by reducing their favorite hangouts, you will reduce your exposure to dust mites during the hours when you are doing some of your deepest breathing.