When was the last time you vacuumed your mattresses? Don't remember? Guess what? It's time to tackle this yearly job. Repeat after me "I won't stop until I have the mattresses and all fabric furniture vacuumed." Dust mites in mattresses and pillows reigns as the #1 cause of morning sinus headaches. Take your pillows outside and shake them good, wash the mattress cover pad and vacuum the mattress.
Speaking of vacuuming your mattress - how often to you turn or flip it? You should do that every time you wash the sheets. Turn it one time and flip it the next. This way the mattress wears evenly and it will last you years longer.