How to Clean and Disinfect a Mattress

To clean and disinfect a mattress, strip and wash the bedding (hot cycle when the fabric allows, to reduce dust mites), vacuum the whole surface with an upholstery tool — including seams — then spot-clean stains with minimal moisture. Baking soda left on for several hours absorbs odors before a final vacuum. Never soak a mattress; trapped water grows mold. Memory foam needs extra caution: no steam, light damp cleaning only, and full air-dry before you remake the bed.

Start with the protector

Most protectors machine-wash; follow the care label. Prefer cold or lukewarm water so waterproof coatings last, and air-dry when the label warns against high heat. A water-resistant protector is the best ongoing defense against sweat, spills, and accidents.

Mattress type matters

• Innerspring / hybrid: tolerate careful vacuuming and light spot-cleaning; dry fully.
• Memory foam / latex: minimal liquid; never soak or steam; support the foam so it does not tear.
• Pillow-top: clean like fabric upholstery — vacuum, blot stains, dry thoroughly.

Can you steam clean memory foam?

Skip steam on memory foam and latex. Heat and moisture can damage the foam and leave damp cores that smell or mold. Stick to vacuuming, baking soda, and barely damp spot work.

Routine cleaning (every 1–3 months)

1. Strip bedding; wash sheets, pillowcases, and protector.
2. Vacuum top, sides, and seams slowly.
3. Optional: dust a thin layer of baking soda; wait 1–4 hours (or overnight); vacuum again.
4. Spot-treat only where needed; dry completely; remake with clean linens.

Supplies: vacuum with upholstery tool, baking soda, mild dish soap or enzyme cleaner, clean white cloths, spray bottle, optional diluted isopropyl alcohol for some stains (spot-test; keep away from flame).

Deep clean

Do a deep pass seasonally or after illness, pets in bed, or visible stains: full vacuum, baking-soda dwell, targeted stain steps below, then 4–24 hours of airflow (fan helps) before bedding goes back on.

Urine (fresh)

1. Blot — do not rub — with dry towels.
2. Mix a little mild dish soap in cold water; blot from the outside of the stain inward.
3. Follow with a 1:1 white vinegar and water blot (helps odor); then plain water blot.
4. Press dry with towels; finish with baking soda; vacuum when dry.

Simple odor spray: equal parts water and white vinegar in a spray bottle, light mist, blot, dry. Do not soak.

Dry urine

Vacuum first. Lightly mist vinegar-water, blot, then baking soda for several hours. Repeat if odor remains. For memory foam, keep every wet step smaller and slower.

Pet urine

Enzyme cleaners made for pet urine outperform soap alone on uric acid crystals — choose one safe for fabrics, follow dwell time, then dry fully. Keep pets off until dry.

Without baking soda

Rely on blotting, enzyme cleaner for organic stains, vinegar-water for odor, and extra dry time with a fan. Baking soda is helpful, not mandatory.

Vomit

1. Remove solids with a spoon or dull scraper.
2. Blot liquids.
3. Enzyme cleaner or mild soapy water; blot rinse.
4. Dry fully; baking soda if odor lingers.

Blood

Use cold water only — heat sets blood. Blot with cold water, then a little mild soap or hydrogen peroxide on white or colorfast fabrics (spot-test; peroxide can bleach). Blot dry.

If the mattress got wet

Stand it on its side if practical, run fans and a dehumidifier, and do not put plastic or bedding back until the core feels dry (often 24–48+ hours). If it stays musty or shows mold, replacement may be safer than endless cleaning.

Frequently asked questions

Does sunlight disinfect a mattress?
A few hours of indirect airing can help odor and moisture; harsh direct sun can fade fabric and, on some foams, is not ideal. Vacuuming and dry time matter more than “baking” it outside.

How often should I clean it?
Vacuum and rotate/flip per manufacturer guidance every 1–3 months; deep-clean stains as they happen.

What about dust mites?
Hot-wash bedding regularly, use allergen-proof covers, and keep the room less humid. Vacuuming reduces surface debris mites live in.

Fresh bedding on a clean mattress makes the whole room feel reset. If you want the surrounding bedroom handled while you dry a mattress, book regular cleaning or a deep cleaning with Pro Housekeepers.