A safe, step-by-step process for spot-cleaning and deodorizing a memory foam mattress without soaking the foam or causing mildew.
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Memory foam behaves differently than an innerspring or hybrid when it comes to cleaning, and treating it the same way can do real damage. Foam absorbs liquid rather than letting it sit on the surface, and it can take days to fully dry out if it gets too wet — which invites mildew and can break down the foam itself. Here's how to clean a memory foam mattress properly, without soaking it or voiding the warranty.
Standard mattress-cleaning advice often assumes you can scrub and rinse the surface. With memory foam, too much liquid gets trapped in the cell structure instead of evaporating off the top, which is why every step below leans toward "damp," never "wet."
Remove all bedding, including the mattress protector, and wash it separately. Vacuum the entire surface with an upholstery attachment to lift dust, skin cells, and debris before you introduce any moisture — cleaning on top of dust just pushes it deeper into the foam.
Mix a small amount of mild dish soap with water in a spray bottle, or use an enzyme cleaner for organic stains like sweat or pet accidents. Lightly mist the stained area — never pour or saturate — and blot with a clean cloth working from the outside of the stain inward. Blot, don't rub; rubbing pushes the stain deeper and can damage the foam's surface.
Once the spot-treated area is dry to the touch, sprinkle a light, even layer of baking soda over the entire mattress surface. Let it sit for at least a few hours (overnight works well if you have a guest bed or spare mattress to sleep on) to absorb odors and residual moisture, then vacuum it up thoroughly.
This is the step people skip, and it's the one that matters most. Point a fan at the mattress or open a window to circulate air, and don't put sheets back on until the treated area is completely dry to the touch — trapping any dampness under bedding is exactly how mildew gets started inside foam.
A weekly vacuum and a mattress protector do most of the heavy lifting long-term. If you don't already have one, a good protector or topper combination keeps spills, sweat, and oils from ever reaching the foam in the first place, which means far less deep-cleaning down the road. For general mattress cleaning across other materials, our complete mattress cleaning guide covers innerspring and hybrid specifics, and our guide on getting stains out of a mattress walks through tougher stain scenarios in more depth.
Vacuum it first, spot-treat any stains with a lightly misted mild soap or enzyme solution and blot dry, deodorize with baking soda, then let it air out completely before putting sheets back on.
You should avoid saturating it. Memory foam absorbs and holds moisture much longer than it should, which can lead to mildew inside the foam — mist and blot instead of soaking.
Blot up as much liquid as possible immediately, then treat the area with an enzyme cleaner designed to break down organic stains, misting lightly and blotting rather than pouring the solution directly on the foam.
No — most memory foam mattresses are designed for a solid foundation, platform bed, or slatted base rather than a traditional box spring; check your specific mattress's base requirements.
It depends on how much moisture was used, but plan on several hours with active airflow from a fan or open window — don't remake the bed until the area is completely dry to the touch.
Ready for a mattress that's easier to keep fresh from day one? Browse our memory foam mattresses in person at any of our five LA showrooms, backed by a free 120-night comfort guarantee.
Start with a mattress type that suits how you sleep, then compare the feel in person.
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Est. $124.84/month for 6 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 6 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 6-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $749.00 for one selected item by 6 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest works
Est. $158.17/month for 6 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 6 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 6-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $949.00 for one selected item by 6 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest works
Est. $146.50/month for 6 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 6 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 6-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $879.00 for one selected item by 6 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest works
Est. $91.63/month for 24 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 24 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 24-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $2,199.00 for one selected item by 24 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
How Synchrony deferred interest works
Est. $92.42/month for 12 months
Item-price payoff target · excludes taxes and fees.
Synchrony · No interest if paid in full within 12 months. Subject to credit approval.
Interest is charged from the purchase date if not paid in full in time. Minimum monthly payments are required and may not repay the balance in time.
This item price meets the 12-month deferred-interest threshold. We use the longest confirmed period available at this price. Avoiding interest requires paying the promotional balance in full before the deadline. Lender fees can affect total cost; this selection does not establish the lowest total borrowing cost.
This illustration divides the displayed price of $1,109.00 for one selected item by 12 months, rounding up to the next cent. It is not the lender’s required payment or billing schedule. Check the promotional deadline on your statement and pay the full promotional balance before it ends.
Taxes, delivery, recycling charges and any lender promotional fees are excluded. Fees may add to the total borrowing cost. Additional discounts can change plan eligibility and the amount financed. Confirm the final purchase amount and applicable terms with the store before arranging financing.
Credit approval, applicable account terms and purchase eligibility apply.
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