A mattress absorbs sweat, skin cells and moisture every night, and unlike sheets, it isn't something most people think to clean regularly, largely because it's hidden under bedding and doesn't show visible dirt the way carpet or upholstery does.
Over time this build-up becomes a genuine source of dust mites and odour, particularly in humid climates or homes without great bedroom ventilation. Steam cleaning addresses this directly, sanitising the surface and drawing out trapped moisture and residue that regular vacuuming can't reach.
An annual mattress steam clean is a reasonable target for most households, with more frequent attention worthwhile for anyone managing allergies or asthma, given how much direct, prolonged contact a mattress gets compared to almost anything else in the home.
