Add Yahoo as a preferred source to see more of our stories on Google. DZIANIS BARYSAU / Getty Images You may be diligent about washing your bed sheets, comforter, and pillowcases, but how often do you ...

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You probably change your sheets regularly, but do you ever think about how to clean your mattress? Mattresses collect dead skin cells, sweat, stains, dust mites and other unpleasant things like urine.

You may be diligent about washing your bed sheets, comforter, and pillowcases, but how often do you clean your mattress? If you have to think about it, chances are it needs a deep clean. Over time, ...