Our Top Picks
It depends on what the topper is made of: memory foam, egg-crate foam and latex toppers should not go in a washing machine and are spot cleaned and air dried, while fiber-fill, down-alternative and many cotton or feather-style toppers can often be machine washed gently if the care label allows it. Always read the care tag first, because manufacturers set the rules and washing against the instructions can damage the topper and may void the warranty.
The guidance below draws on care advice from topper-cleaning guides, which broadly agree on the split between foam and fiber, and it points out where advice varies. Where a point comes from retail or blog sources rather than a testing body, it is described in general terms.
OLIXIS 3 Inch Queen Cooling Gel Infused Memory Foam Mattress Topper Bed Pad | CertiPUR-US Certified, Soft Ventilated Pressure Relieving Bed Pad in a Box, Breathable Plush Feel
Chosen because it specifies CertiPUR-US Certified and Soft Ventilated Pressure Relieving Bed Pad in a Box.
View on Amazon
EGO 2 Inch Twin Mattress Topper Gel Memory Foam for Pressure Relief | Cooling Gel Infused, Dorm Room Essentials Bed Topper in a Box, CertiPUR-US Certified, 75"Lx38"W
Chosen because it specifies Cooling Gel Infused and Dorm Room Essentials Bed Topper in a Box.
View on AmazonEGO 3 Inch Queen Mattress Topper Gel Memory Foam for Pressure Relief | Cooling Gel Infused, Ventilated Design Bed Topper in a Box, CertiPUR-US Certified, 80"Lx60"W
Chosen because it specifies Cooling Gel Infused and Ventilated Design Bed Topper in a Box.
View on Amazon
Linenspa 2 Inch Gel Memory Foam Mattress Topper, Plush, Cooling, Queen Size | CertiPUR-US certified, Cooling gel infusion, Plush pressure relief, Fits under standard fitted sheets, Expands in 24-48 hrs
Chosen because it specifies Plush and Cooling.
View on AmazonCan You Wash a Mattress Topper? At a Glance
| Topper type | Machine wash? | Safe cleaning method | Drying |
|---|---|---|---|
| Memory foam (solid or gel-infused) | No | Vacuum, spot clean with a barely damp cloth and mild soap, baking soda for odor | Air dry flat, away from direct heat |
| Egg-crate foam | No | Same as memory foam; wipe, do not soak; the ridges trap moisture | Air dry, standing it up so the ridges can ventilate |
| Latex | No | Wipe with a damp cloth and mild soap in cold water, blot dry | Air dry in shade; sunlight and heat can degrade latex |
| Polyester fiber or down-alternative | Often yes, if the label allows | Gentle cycle, mild detergent, extra rinse | Low heat with dryer balls, or air dry until fully dry through the core |
| Feather or down | Sometimes, with care | Front-loading machine, gentle cycle, minimal detergent, extra rinse | Low heat, repeated cycles with dryer balls until completely dry |
| Cotton or wool-style pad | Check label; some are machine washable, wool often is not | Follow label temperature; wool usually needs gentle or professional care | Low heat or air dry |
| Removable cover on any topper | Usually yes | Cool or warm gentle cycle as labeled | Air dry or low heat |
Memory Foam and Egg-Crate Toppers: Do Not Machine Wash
Care guidance for foam toppers is consistent: machine washing agitates and can tear the foam, breaking down the cell structure so it loses support. Foam also soaks up water and is slow to release it, which raises the risk of mildew if it stays damp inside. Egg-crate foam has the same risk, and its peaks and valleys can hold moisture longer than a flat surface.
How to spot clean foam
- Remove the topper from the bed. This protects the mattress beneath from drips and lets you reach both sides.
- Vacuum both sides. An upholstery attachment lifts dust, skin flakes and crumbs without water, which is the safest part of the job.
- Blot fresh spills at once. Press a dry towel on the spot. Do not rub, which pushes liquid deeper.
- Dab a mild soap solution on the mark. Use a cloth that is only slightly damp, with a few drops of mild detergent in cool water. Work from the outside of the stain inward.
- Blot with a cloth dampened in plain water to lift soap residue, then press with dry towels.
- Deodorize with baking soda. Sprinkle a thin layer over the surface, leave it for a while (guides suggest about fifteen to thirty minutes or longer for strong odors) and vacuum it off.
- Air dry completely. Lay it flat or stand it on its edge in a well-ventilated room, away from radiators and direct sun, until no dampness remains inside.
Use as little water as possible. Avoid harsh chemicals, bleach, steam cleaners and high heat. Test any product on a hidden spot first. Some sources suggest an enzymatic spray for biological stains, but even that should be applied sparingly. If the topper has a zip-off cover, some covers can be machine washed on a cool, gentle cycle, but others are spot clean only, so check the cover’s own tag; the foam always stays out of the machine.
Latex Toppers: Gentle Wipe Only
Latex is a natural or blended rubber that can degrade with heat, harsh detergents and prolonged sunlight, and it becomes very heavy when wet. Manufacturer care pages generally recommend wiping with a damp cloth and mild soap in cool or cold water, blotting dry and letting it air dry flat in the shade. Cotton covers that zip off a latex core are often spot clean only, because they can shrink in a machine. Avoid a washing machine, dryer, hot water and direct sun. Follow the maker’s label, because blends and covers differ.
Fiber, Down-Alternative and Feather Toppers: Often Machine Washable
Toppers filled with polyester fiber or down-alternative are usually the easiest to launder. Typical care labels allow a gentle machine cycle with mild detergent. Guides often suggest adding a second rinse so no detergent residue stays in the fill.
Machine washing steps and the reason for each
- Check the size against your washer. A topper that is too bulky will not rinse or spin properly. If it fits only tightly, use a laundromat’s large front-loader or skip machine washing. Top-loaders with a central agitator can twist and damage fill.
- Use mild detergent in a small amount. Too much soap is hard to rinse out of thick fill.
- Select a gentle cycle and the temperature on the label. Heat can damage some fills and shrink covers.
- Add an extra rinse. This removes residue that can leave the fill stiff or irritating.
- Dry on low heat with dryer balls, or air dry. Polyester fill can scorch or melt at high heat. Balls help break up clumps.
- Confirm it is dry all the way through. Damp fill that is put back on the bed can mildew.
Feather and down toppers, where the label permits washing, usually need a front-loading machine, minimal detergent and repeated low-heat drying cycles until no damp patches remain. If the label says dry clean only, follow it.
Drying Times and Odor Tips
| Topper type | Typical drying approach | Time guidance |
|---|---|---|
| Foam after spot cleaning | Air dry, good ventilation | Can take many hours to a day or more depending on how damp it got |
| Latex after wiping | Shade, air dry | Usually several hours if only the surface was wiped |
| Fiber or down-alternative after washing | Low heat with dryer balls or air | Often more than one dryer cycle; air drying takes longer |
| Feather or down after washing | Low heat, repeated cycles | Can take several cycles; check for damp pockets by hand |
Because times vary with thickness and humidity, treat the table as a rough guide rather than a promise. The real test is feeling the center of the topper, squeezing a section, and smelling for any damp odor.
Sunlight: use with caution
Fresh air helps toppers smell fresher, but direct sun is not ideal for every material. Guidance for latex warns that ultraviolet light can break it down over time, and foam can also yellow or become brittle. A shaded, airy spot is a safer choice. Fiber toppers tolerate air drying outdoors better, as long as they are fully dry before returning to the bed.
How Often to Clean a Topper
- Use a washable mattress protector over the topper so that most spills and sweat never reach it, and wash that protector regularly with your sheets.
- Spot clean spills as soon as they happen.
- Vacuum and air out the topper now and then, and give it a deeper clean a few times a year according to its care label.
- Flip or rotate it if the maker says it is designed for that.
Troubleshooting
| Problem | Likely cause | Fix |
|---|---|---|
| Musty smell after cleaning | Moisture trapped inside | Keep drying with airflow; if it persists, consider whether mildew has formed and whether the topper should be replaced |
| Fiber topper clumps after washing | Insufficient drying or high heat | Tumble on low with dryer balls or hand fluff while drying |
| Foam feels sticky or crumbles | Harsh cleaner or age | Stop using chemical cleaners; foam that is crumbling is past its life |
| Stain remains on foam | Stain set before cleaning | Repeat gentle spot cleaning; avoid scrubbing which can damage the surface |
| Care label missing | Faded or removed tag | Treat as foam-style spot cleaning only, or contact the manufacturer |
Safety Notes
- Check the care label and the warranty before cleaning; excess water can void coverage on foam.
- Test any cleaner on a hidden spot.
- Do not mix cleaning products, and never combine bleach with ammonia, vinegar or other cleaners.
- Wear gloves and ventilate the room when using stronger products.
- If you find black or green fuzzy growth, treat it as possible mold: stop cleaning with household products and consider replacement, and seek advice from a health professional if anyone in the home has respiratory problems or allergies.
Frequently Asked Questions
Can you put a memory foam topper in the washing machine?
No. Care guidance says agitation can tear the foam and ruin its support, and the foam holds moisture that is slow to leave. Spot clean it and air dry it instead, and only machine wash a removable cover if the label allows it.
Can you wash an egg-crate foam topper?
Not in a machine. Egg-crate foam is spot cleaned and dried in the same way as other foam, and standing it up helps air reach the ridges. Soaking it can leave moisture trapped in the peaks and valleys.
How do you wash a fiber or down-alternative topper?
If the label allows, use a large washer on a gentle cycle with mild detergent and an extra rinse. Dry on low heat with dryer balls or air dry until it is dry through the middle. High heat can damage polyester fill.
How do you get odor out of a foam topper?
Sprinkle baking soda over the surface, leave it for a while and vacuum it away. Airing the topper in a ventilated room also helps. Avoid soaking it or using strong chemicals.
Can I dry a mattress topper in the sun?
For fiber toppers, fresh air is fine as long as they dry completely. For latex and foam, many care guides advise shade, since ultraviolet light and heat can degrade them over time. Check the maker’s instructions.
How long does a topper take to dry?
It varies with thickness, material and humidity. A lightly spot-cleaned foam topper can be dry within hours, while a washed fiber or feather topper may need multiple dryer cycles or a day or more of air drying. Never put it back on the bed while any part still feels damp.
How can I keep a topper clean longer?
Use a washable protector over the topper, wash it regularly, deal with spills straight away and vacuum the topper occasionally. This reduces the need for deep cleaning, which is the riskiest step for foam.
