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

If you’re searching for How To Clean Memory Foam Mattress Cover, you’re usually dealing with spills, stains, or just everyday buildup. This guide walks through what you can safely do, what to avoid, and how to keep your cover fresh without harming the memory foam underneath.

What Exactly Is a Memory Foam Mattress Cover?

A memory foam mattress cover (or mattress encasement) is the removable fabric layer that surrounds your memory foam mattress. It may be:

  • Fully removable with a zipper
  • Partially removable
  • Permanently attached (in some models)

How you clean it depends on whether it’s removable and what the care label allows.

Can I Machine Wash a Memory Foam Mattress Cover?

In many cases, yes—but only if the care label says so.

Most removable covers can be safely washed on a gentle cycle in cold water. However, some covers contain delicate materials or special backing that can shrink or become damaged in hot water or high-speed spins.

Always check:

  • Fabric type (cotton, polyester, blend, knit, etc.)
  • Washing instructions (machine wash, hand wash, or spot clean only)
  • Temperature recommendations (cold, warm, or no heat)

If the label says “spot clean only” or there is no clear guidance, treat the cover more carefully and avoid fully submerging it in water.

Step-by-Step: How To Clean Memory Foam Mattress Cover (Removable)

1. Remove and Vacuum the Cover

  • Unzip and carefully remove the cover from the mattress.
  • Use a hand vacuum or upholstery attachment to remove dust, hair, and debris from the outside and inside of the cover.

2. Pre-Treat Stains

For small stains (like sweat marks or light spills):

  • Mix a mild detergent with cold or lukewarm water.
  • Dip a clean cloth in the solution and gently dab the stain.
  • Avoid soaking the fabric, especially any padded sections.
  • For odor, a light sprinkle of baking soda on the damp area can help; vacuum it off once dry.

3. Machine Wash (If Allowed)

If the label permits:

  • Turn the cover inside out to protect the outer surface.
  • Use a gentle cycle with cold water.
  • Choose a mild, liquid detergent without bleach or harsh additives.
  • Avoid fabric softeners if your cover has performance fabrics (they can reduce breathability).

4. Dry the Cover Carefully

Drying is where many covers get damaged.

  • Air-drying is safest. Lay the cover flat on a clean surface or hang it over a line or rack.
  • Keep it away from direct high heat (like radiators or very hot sun for long periods).
  • If the label allows tumble drying, use low or no heat and remove promptly to avoid shrinking.

Only put the cover back on the mattress when it is completely dry to prevent trapped moisture and odors.

How Do I Clean a Non-Removable Memory Foam Mattress Cover?

Some mattresses have covers that don’t come off. In this case, focus on spot cleaning:

  1. Blot spills immediately with a dry, absorbent cloth.
  2. Mix a small amount of mild detergent with water.
  3. Lightly dampen a cloth and blot (don’t rub) the stained area.
  4. Use a second cloth with plain water to remove soap residue.
  5. Let the area air dry fully before placing bedding back on.

Avoid soaking the cover, as too much moisture can reach the memory foam, which is slow to dry.

What Should I Avoid When Cleaning a Memory Foam Mattress Cover?

To keep both the cover and mattress in good condition, avoid:

  • Bleach or strong chemicals – can weaken fibers and discolor fabric.
  • Very hot water or high heat drying – can cause shrinking or damage.
  • Rough scrubbing or stiff brushes – can fuzz or tear the fabric.
  • Steam cleaning directly on memory foam – can introduce too much moisture into the foam.
  • Leaving the cover damp on the mattress – can lead to lingering odors or moisture issues.

How Often Should I Clean a Memory Foam Mattress Cover?

How often you tackle How To Clean Memory Foam Mattress Cover depends on use and personal preference:

  • Light-use: Every 3–6 months
  • Heavier use (kids, pets, frequent sweating): Every 1–3 months or after any significant spill
  • Spot clean as needed in between full washes

Using a separate, washable mattress protector over the cover can help reduce how often you need to wash the main cover.

What About Tough Stains or Odors?

For persistent issues:

  • Sweat or yellowing: Gentle detergent and repeated light spot cleaning can help.
  • Mild odors: Sprinkle baking soda over the dry cover, let it sit for a few hours, then vacuum thoroughly.
  • Old or set-in stains: These may not fully disappear but can often be lightened with patient, repeated spot treatments rather than aggressive scrubbing.

If a stain or odor remains even after careful cleaning, it’s often more practical to focus on keeping it sanitary and odor-free, even if a faint mark is still visible.

✅ Quick Mattress Takeaways

Key points consumers should understand about How To Clean Memory Foam Mattress Cover

  • Always read the care label first before washing or spot cleaning.
  • Removable covers can often be machine washed on a gentle, cold cycle with mild detergent.
  • Non-removable covers should be spot cleaned only, avoiding heavy moisture.
  • Air-drying is safest; high heat can shrink or damage the cover.
  • Avoid bleach, harsh chemicals, and rough scrubbing to protect the fabric and foam.
  • Tackle spills quickly and let the cover dry completely before putting it back on the mattress.
  • A separate, washable protector can reduce how often you need to deep clean the main cover.

Handled with a bit of care, your memory foam mattress cover can stay fresh, comfortable, and supportive of a cleaner sleep environment for years.