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How to get rid of dust mites in your mattress
Wash your bedding with hot water weekly.
Put your sheets, pillowcases, and blankets through the wash once a week. Wash them in water that is at least 130 f (54 c).
Cooler temperatures will not kill off the mites. If you own bedding that cannot be washed hot, put it in the dryer for 15 minutes at 130 f (54 c) or higher to kill the mites.