What is the best way to keep my mattress topper fresh? Rebecca Leonard November 11, 2018 22:18 Updated Follow Pull back the covers every day allowing your bed to air, letting the fibres breathe and moisture to evaporate. Related articles How should I clean my mattress topper? How can I protect my mattress topper from spills and stains? What should I do if my mattress topper filling starts clumping together? Are all mattress toppers deep? What mattress topper firmness should you get for a teenager? Comments 0 comments Please sign in to leave a comment.