Can You Steam Clean a Mattress? Safer Cleaning and Care

Quick answer: Do not steam a mattress until the mattress manufacturer specifically confirms that the method is suitable for your model. Heat and moisture can damage some foam or leave the interior damp. Many routine cleanups can start with laundering bedding, vacuuming and following the manufacturer’s spot-cleaning instructions.

This guide explains when to pause, what to check and how to choose a cleaning approach. It does not assume that every mattress can be sanitized with a household steamer. Manufacturer information checked October 26, 2026.

Can you steam clean a mattress?

Sometimes, but compatibility varies. Look for cleaning instructions on the law tag, cover label and manufacturer’s care page. If the instructions are silent, contact the maker and identify the exact model before applying steam or using a wet extractor.

For example, Casper advises against soaking or steam-cleaning because moisture can harm materials and contribute to odors or mold. Tempur-Pedic says not to wash TEMPUR material and provides specific cover and spill instructions. Other brands may have different rules.

Before using any steam or wet-cleaning machine

1. Find the care instructions for the exact mattress and removable cover. Ask the manufacturer if steam, extraction or a specific cleaner is allowed.
2. Check warranty exclusions, especially for stains, liquid damage or cleaning chemicals.
3. Identify the machine and mode. A carpet extractor, a steam cleaner and a vacuum do different jobs.
4. Ask how the mattress should dry and whether professional cleaning is recommended. Do not use a wet mattress or cover it with bedding before it is thoroughly dry.
5. When dealing with suspected mold, an extensive spill or an infestation, contact the manufacturer or an appropriate professional instead of assuming a household treatment will solve the problem.

A gentler routine for ordinary cleaning

1. Strip the bed. Wash sheets and the protector according to their care labels. If your mattress has a removable cover, confirm that the maker permits removal and washing; a zipper does not always mean the cover is intended to come off.

2. Vacuum the surface. Use a clean upholstery attachment, working over the surface and seams without snagging fabric. Follow the mattress maker’s guidance.

3. Address a fresh spill promptly. Blot rather than rub and follow the manufacturer’s approved stain treatment. Use only the small amount of moisture or cleaner the instructions permit; do not saturate foam. Keep the area uncovered until completely dry.

4. Protect the mattress. A correctly fitted waterproof protector can help with future spills. It does not guarantee warranty coverage or make a mattress immune to moisture.

For a broader routine, see our mattress cleaning guide. Follow the mattress maker’s instructions if they differ.

A portable extractor is not automatically a steamer

Product families can contain different machines. BISSELL’s standard Little Green 1400B sprays cleaning solution and uses suction. BISSELL also sells a separate Little Green HydroSteam model with steam technology. Check the exact model and its manual; the name “Little Green” alone does not mean a machine produces steam.

Neither machine’s availability establishes that your mattress can safely be steam-cleaned or wet-extracted. Get mattress-specific approval and follow both manufacturers’ directions.

Urine, blood, odors and moisture

Urine or other spills: Blot promptly and check the manufacturer’s approved products. Enzyme cleaners are not suitable for every foam or cover; for example, Casper advises against certain enzyme sprays on its mattress materials. Ask the mattress maker before using one.

Blood: Follow the maker’s stain instructions and avoid assuming that heat is the correct first treatment. A manufacturer or professional cleaner can advise on the specific fabric and stain.

Persistent odor or dampness: Avoid sealing damp layers under bedding. If moisture has penetrated deeply or you suspect mold, seek model-specific guidance. Surface cleaning may not resolve a problem inside the mattress.

What about bed bugs or dust mites?

Do not assume steaming a mattress eliminates an infestation. The EPA’s bed bug guidance describes steam as one possible component of treatment, with equipment and temperature requirements, and notes that non-chemical methods may not eliminate an infestation on their own. Bed bugs can be elsewhere in the room. Consult a qualified pest professional and the mattress manufacturer before treating the bed.

For allergies, discuss symptoms and a practical cleaning plan with a healthcare professional. Washing bedding and using a suitable encasement may help manage exposure, but no cleaning method guarantees an allergen-free bed.

Frequently asked questions

Should I steam my mattress every two weeks?

There is no universal recommendation to do so. Frequent heat and moisture may damage products that do not permit it. Follow your mattress manufacturer’s care instructions.

Will steam sanitize the whole mattress?

Not necessarily. Results depend on the device, surface temperature, contact time and material; treating the surface does not establish that the interior is sanitized.

How long does a mattress take to dry?

There is no reliable universal drying time. Material, amount of moisture, humidity and ventilation all matter. Keep bedding off until the mattress is completely dry, and contact the manufacturer if it remains damp.

Can I steam memory foam?

Do not assume so. Check the specific manufacturer’s written care guidance; Casper, for example, advises against steam-cleaning its mattresses.

Can the cover be machine-washed?

Only if its label or manufacturer says it is removable and washable. Use the specified wash and dry settings.

Final take: Check the mattress maker’s instructions first. For most everyday messes, a dry vacuum and manufacturer-approved spot cleaning are the place to start.