Is Your House Making You Sick?

Linens

Another way to control the number of dust mites is to keep bed linens clean. Washing sheets and pillowcases weekly (use 150-degree temperature) is a must. Replace pillows every one to three years, too.

"If you can," adds Dr. Tierno, "Put an impervious cover between your mattress and your pillows. That prevents dust mites from coming into contact with your face."