How To Deep Clean a Memory Foam Mattress: Step‑By‑Step Guide

If you’re wondering how to deep clean a memory foam mattress, you’re not alone. Memory foam needs a bit more care than traditional spring mattresses, and it’s important to clean it without soaking or damaging the foam. This FAQ-style guide walks you through safe, effective ways to deep clean a memory foam mattress, remove stains, and keep it fresher for longer.

What does “deep cleaning” a memory foam mattress actually mean?

Deep cleaning goes beyond a quick vacuum. It usually includes:

  • Removing surface dust and debris
  • Treating stains (like sweat, spills, or accidents)
  • Neutralizing odors
  • Letting the mattress fully dry and air out

For memory foam, deep cleaning must be done gently because the foam is absorbent and can be damaged by harsh scrubbing, strong chemicals, or excess moisture.

How To Deep Clean a Memory Foam Mattress Safely

Step 1: Strip the bed and air it out

Remove all bedding, protectors, and toppers. If possible, let the mattress sit uncovered for 30–60 minutes near an open window or in a well‑ventilated room. This helps release trapped odors and moisture.

Step 2: Vacuum thoroughly

Use a vacuum with an upholstery attachment to:

  • Go over the entire surface
  • Pay extra attention to seams and crevices
  • Vacuum both sides if the mattress design allows flipping

Regular vacuuming helps remove dust, crumbs, and hair that can build up over time.

Step 3: Spot clean stains (without soaking)

When learning how to deep clean a memory foam mattress, stain removal is usually the main concern. Always spot clean rather than dousing the surface.

  1. Blot, don’t rub
    If the stain is fresh, gently press with a dry, clean cloth or paper towel to absorb as much liquid as possible.

  2. Choose a mild cleaning solution
    Common options include:

    • A small amount of gentle liquid soap mixed with cool water
    • A light mixture of white vinegar and water for general stains and odors

    Always apply the solution to a cloth first, not directly onto the mattress.

  3. Gently clean the area

    • Dab the stain with the damp cloth
    • Work from the outside edge toward the center
    • Avoid scrubbing, which can push the stain deeper into the foam

  4. Blot with plain water
    Use a second cloth lightly dampened with water to remove any soap or vinegar residue.

  5. Dry the area
    Press a dry towel on the spot to remove as much moisture as possible.

How do I remove odors from a memory foam mattress?

Odors can come from sweat, spills, or simply long-term use. A simple deodorizing step is often part of how to deep clean a memory foam mattress.

Using baking soda for odor control

  • Lightly sprinkle baking soda over the entire surface of the mattress
  • Leave it on for several hours, or overnight for stronger odors
  • Vacuum thoroughly to remove the baking soda

This can help neutralize smells without introducing moisture or strong scents.

Can I use steam cleaners or soak my memory foam mattress?

This is a common question, and also one of the biggest misconceptions.

  • Avoid steam cleaning: The heat and moisture can saturate the foam and may affect its structure over time.
  • Never soak the mattress: Excess water can get trapped inside, making it difficult to dry completely and potentially leading to lingering dampness.

Stick to light, surface-level moisture only, and always allow plenty of time for drying.

How long does a deep-cleaned memory foam mattress take to dry?

Drying time depends on how much liquid was used and your room’s airflow. As a general guide:

  • After light spot cleaning, allow at least several hours to dry
  • Use fans and open windows to improve air circulation
  • Make sure the mattress feels completely dry to the touch before putting bedding back on

If you had to clean a larger area, consider leaving the mattress uncovered for a full day.

How often should I deep clean a memory foam mattress?

You don’t need to deep clean frequently if you maintain it regularly.

  • Vacuum: Every 1–3 months
  • Spot clean: As soon as spills or stains occur
  • Full deodorizing with baking soda: Every few months, or as needed

Using a washable mattress protector can reduce how often deep cleaning is necessary.

What should I avoid when deep cleaning memory foam?

To help your mattress last, it’s important to know what not to do.

❌ Avoid:

  • Soaking or heavily spraying the mattress
  • Bleach or very strong chemical cleaners
  • Abrasive brushes or harsh scrubbing
  • Direct, intense heat (like hair dryers on high heat pressed close to the foam)

Stick to mild cleaners, light moisture, and gentle dabbing.

✅ Quick Mattress Takeaways

Key points about How To Deep Clean a Memory Foam Mattress

  • Use a gentle approach: Vacuum first, then spot clean only where needed.
  • Control moisture: Apply cleaners to a cloth, not directly to the foam, and never soak the mattress.
  • Deodorize with baking soda: Sprinkle, let sit, then vacuum to help reduce odors.
  • Allow enough drying time: Ensure the mattress is completely dry before making the bed again.
  • Skip steam and harsh chemicals: These can damage memory foam or trap moisture inside.

Knowing how to deep clean a memory foam mattress helps you keep it comfortable, fresh, and better protected from everyday wear. With careful spot cleaning, regular vacuuming, and mindful drying, you can care for your mattress without compromising the foam’s feel or structure.