Mites live in upholstery, rugs and especially in bedding, where we shed a lot of skin. Although they are present year round, they tend to be worse in the winter. Unfortunately, short cuts like air cleaners are much less effective than following dust-control measures. Even better encase the pillow and mattress with a plastic jacket, taping over the zipper for complete seal.
Vacuum carpets thoroughly and often.
To allow dust to escape, open the doors to other rooms and windows in the room being vacuumed. To filter out extra dust, place a cheese cloth over vents before turning the furnace on for the first time each winter. Change or wash furnace filters each month. When changing the beddings, avoid shaking sheets. Sheets should be washed in hot water.