How To Clean a Memory Foam Mattress Cover: Simple Steps and FAQs

If you’re searching for how to clean a memory foam mattress cover, you’re usually dealing with spills, stains, or just everyday buildup. Memory foam can be sensitive to moisture and harsh cleaning methods, so it’s natural to wonder what’s safe—and what might damage your mattress.

This FAQ-style guide walks through exactly how to clean a memory foam mattress cover, from routine freshening to tackling tougher stains, while helping you avoid common mistakes.

What kind of cover do I have on my memory foam mattress?

Before you decide how to clean a memory foam mattress cover, it helps to know what you’re working with:

  • Removable zippered cover: Often made from polyester, cotton blends, or knit fabrics. These may be machine-washable or spot-clean only, depending on the care label.
  • Non-removable cover: Sewn directly to the mattress. These should never be fully soaked or removed; cleaning is limited to spot treatment and surface freshening.
  • Separate mattress protector: A thin, removable layer that sits on top. This is usually the first thing to wash before you touch the actual mattress cover.

Always check the care tag on the cover first. It gives the safest instructions for that specific fabric and construction.

Can you machine wash a memory foam mattress cover?

Sometimes—but not always.

Many people searching for how to clean a memory foam mattress cover want to just unzip it and throw it in the washer. That can be fine only if the label clearly says machine washable.

If the tag allows machine washing:

  • Use cold water
  • Choose a gentle cycle
  • Add a mild, liquid detergent
  • Avoid bleach and fabric softeners

If the label says spot clean only or doesn’t mention washing, stick to surface cleaning. Washing a non-washable cover can cause shrinking, tearing, or warping, which can affect how the mattress feels and fits inside the cover.

How do you spot clean a memory foam mattress cover?

Spot cleaning is the safest method when you’re unsure how to clean a memory foam mattress cover without damage.

Basic spot-cleaning steps:

  1. Blot the spill

    • Use a clean, dry cloth or paper towels.
    • Gently press—don’t rub—to absorb as much liquid as possible.

  2. Mix a mild cleaning solution

    • Combine a small amount of gentle liquid detergent with cool water.
    • You can also use a light mixture of water and a small amount of white vinegar for odor.

  3. Test a hidden area

    • Dab a small amount of the solution on an unseen part of the cover.
    • Wait a few minutes to check for discoloration or damage.

  4. Treat the stain

    • Lightly dip a clean cloth into the solution.
    • Blot the stain, working from the outside inward.
    • Avoid soaking the fabric; excess liquid can seep into the foam.

  5. Rinse the area

    • Use another cloth dampened with plain water to blot away soap residue.

  6. Dry thoroughly

    • Blot with a dry towel.
    • Let the cover air dry completely before putting on bedding or lying on it.

How do you clean up different types of stains?

When asking how to clean a memory foam mattress cover, many people are dealing with specific messes. General tips:

Food and drink spills

  • Blot immediately.
  • Use mild detergent and cool water.
  • For lingering odor, a light sprinkle of baking soda after spot cleaning can help; vacuum once dry.

Sweat and general yellowing

  • Light sweat stains often respond to a mix of water and a small amount of mild detergent or water with a small amount of white vinegar.
  • Apply sparingly and blot dry well.

Urine or stronger odors

  • Blot up as much as possible first.
  • Use a mild detergent solution or a diluted vinegar solution.
  • After cleaning and drying, sprinkle baking soda on the area, let it sit for several hours, then vacuum.

Can I use a steam cleaner or soak the cover?

It’s usually not recommended to use a steam cleaner directly on a memory foam mattress or to soak the cover. High heat and heavy moisture can:

  • Break down foam structure
  • Encourage mold or mildew if the mattress doesn’t dry fully
  • Cause the cover to warp or lose shape

When in doubt, stick to lightly damp cloths and air drying.

How often should I clean a memory foam mattress cover?

How often you think about how to clean a memory foam mattress cover depends on use and environment, but general routines include:

  • Weekly: Wash or change any removable protectors or sheets.
  • Every few months: Light surface vacuuming of the mattress cover (with upholstery attachment) to remove dust and debris.
  • As needed: Spot clean spills or stains ASAP to prevent setting.

Regular use of a separate mattress protector can reduce how often you need to touch the actual mattress cover.

How do I dry a memory foam mattress cover safely?

Whether you’ve machine washed (per label instructions) or spot cleaned, drying correctly is essential:

  • Air dry flat or over a drying rack whenever possible.
  • Keep it in a well-ventilated area, away from direct heat sources.
  • If the care tag allows tumble drying, use a low or no-heat setting.
  • Make sure the cover is completely dry before putting it back on the mattress to avoid trapped moisture.

❗ Common mistakes to avoid

When figuring out how to clean a memory foam mattress cover, try to avoid:

  • Using bleach or harsh chemicals that can damage fibers or discolor fabric
  • Scrubbing aggressively, which can spread stains and roughen the material
  • Letting liquids soak into the foam beneath the cover
  • Putting a damp cover back on the mattress before it’s fully dry

✔️ Quick Mattress Takeaways

Key points about how to clean a memory foam mattress cover

  • Check the care label first to see if the cover is machine washable or spot clean only.
  • Blot, don’t rub, to handle spills and avoid pushing stains deeper.
  • Use mild detergent with cool water and test in an inconspicuous area.
  • Keep moisture minimal to protect the foam inside.
  • Allow the cover to air dry thoroughly before reusing.
  • A separate, washable mattress protector can make future cleanups much easier.

By following these simple guidelines, you can handle how to clean a memory foam mattress cover confidently, keeping your sleeping surface fresher and more comfortable over time.