What is the best way to keep my mattress topper fresh? Rebecca Leonard October 12, 2018 15:13 Updated Follow Pull back the covers every day allowing your bed to air, letting the fibres breathe and moisture to evaporate. Related articles How can I protect my mattress topper from spills and stains? How should I clean my mattress topper? What should I do if my mattress topper filling starts clumping together? What mattress topper firmness should you get for a teenager? Are all mattress toppers deep? Comments 0 comments Please sign in to leave a comment.