Prevention of Dust Mite Allergy
Remember, having dust mites doesn’t mean your house isn’t clean. In most areas of the world, these creatures live in every home, no matter how clean. But, you can reduce their effects. There are many changes you can make to your home to reduce the numbers of these unwanted "guests."

Studies show that more dust mites live in your bedroom than anywhere else in your home. So this is the best place to start.

Cover mattresses and pillows in zippered dust-proof covers. These covers are made of a material with pores too small to let dust mites and their waste product through. They are also called allergen-impermeable.
Plastic or vinyl covers are the least expensive, but some people find them uncomfortable. You can buy other fabric allergen-impermeable covers from many regular bedding stores.

Wash your sheets and blankets weekly in hot water. You have to wash them in water that’s at least 130 degrees Fahrenheit or more to kill dust mites.

Get rid of all types of fabric that mites love and that you cannot easily wash regularly in hot water. Avoid wall-to-wall carpeting, curtains, blinds, upholstered furniture and down-filled covers and pillows in the bedroom. Put roll-type shades on your windows instead of curtains.

Have someone without a dust mite allergy clean your bedroom. If this is not possible, wear a filtering mask when dusting or vacuuming. Many drug stores carry these items. Dusting and vacuuming stir up dust. So try to do these chores when you can stay out of the bedroom for a while afterward.

Special HEPA filter vacuum cleaners can help to keep mites and mite waste from getting back into the air. You can buy these filters from an allergy supply company or in some specialty vacuum stores if your vacuum cleaner doesn’t come with a HEPA filter.

Vacuuming is not enough to remove all dust mites and their waste. A large amount of the dust mite population may remain because they live deep inside the stuffing of sofas, chairs, mattresses, pillows and carpeting.