“You should be regularly cleaning your pillows but there are different washing rules depending on the filling and material. You should always check the care label on your pillows, but here is our advice on general cleaning tips for natural, polyester and foam-filled pillows.”
Although most pillows have a tag giving laundering instructions, few people bother to wash them. We think they’re shielded from the day-to-day grit and grime of life, thanks to the pillowcase. Or else, that washing them may ruin them.
But, the standard pillowcase is typically only made of cotton or some other easily permeated fabric, rendering the pillow susceptible to pretty nasty stuff.