How to Clean a Memory Foam Mattress: The Safe Method

Memory foam mattresses require a different cleaning approach than traditional innerspring mattresses. Memory foam is highly absorbent and takes a long time to dry — too much moisture causes mildew and can permanently damage the foam structure. This guide covers how to clean a memory foam mattress safely and effectively.

What You'll Need

• Rocco & Roxie Oxy Stain Remover Spray — for general stains; spray on cloth, not directly on foam
• Rocco & Roxie Enzyme Stain & Odor Eliminator — for organic stains (urine, sweat, blood)
• Nutricost Baking Soda (2 lbs) — the safest and most effective deodorizer for memory foam
• Febreze Fabric Refresher Spray — for light surface freshening between deep cleans
• Amazon Basics Microfiber Cleaning Cloths (24-pack)
• Vacuum with upholstery attachment
• Fan (essential for drying)

The Most Important Rule: Minimal Moisture

Memory foam is like a sponge — it absorbs liquid deeply and releases it slowly. Excess moisture leads to mildew growth inside the foam that you can't see or reach. Always use the minimum amount of moisture necessary, and ensure complete drying before making the bed.

What NOT to Do with Memory Foam

• ❌ Never machine wash or put in the dryer
• ❌ Never submerge in water
• ❌ Never pour liquid directly onto the foam
• ❌ Never use a steam cleaner on memory foam (too much moisture)
• ❌ Never wring or twist memory foam
• ❌ Never use harsh chemicals or bleach

Step 1: Vacuum Thoroughly

Use the upholstery attachment to vacuum the entire mattress surface, sides, and any accessible areas. Work slowly in overlapping passes. This removes dead skin cells, dust, and surface debris before any treatment.

Step 2: Deodorize with Baking Soda

This is the safest and most effective regular treatment for memory foam:

1. Sprinkle baking soda generously over the entire surface
2. Let sit for 8 hours or overnight — memory foam benefits from longer dwell time than regular mattresses
3. Vacuum thoroughly with multiple slow passes
4. Flip and repeat on the other side if accessible

Step 3: Spot Clean Stains

For stains, always apply cleaner to a cloth first — never directly to the foam:

General Stains

1. Spray Rocco & Roxie Oxy Stain Remover onto a microfiber cloth
2. Blot the stain gently from the outside in
3. Use a second cloth dampened with cold water to blot and rinse
4. Press dry towels firmly onto the area to absorb moisture
5. Point a fan directly at the area and allow to dry completely before making the bed

Organic Stains (Urine, Sweat, Blood)

1. Apply Rocco & Roxie Enzyme Cleaner to a cloth and blot the stain
2. Let the enzyme cleaner work for 10–15 minutes — keep the cloth pressed against the stain
3. Blot with a cold damp cloth to rinse
4. Press dry towels firmly to absorb moisture
5. Dry with a fan — memory foam can take 4–12 hours to dry completely

Step 4: Drying — The Critical Step

Proper drying is the most important part of cleaning memory foam:

• Point a fan directly at the treated area on high
• Open windows for airflow
• On a dry day, move the mattress near a window for sunlight exposure
• Check by pressing firmly on the treated area — if it feels cool or damp, it's not dry yet
• Memory foam can feel dry on the surface while still damp inside — allow extra time
• Never make the bed until you're certain the foam is completely dry

How Often Should You Clean a Memory Foam Mattress?

• Monthly: Baking soda deodorizing and vacuum
• Every 3 months: Full vacuum and spot check for stains
• Immediately: Any spill or accident — act fast before liquid penetrates deep into the foam

Protecting Your Memory Foam Mattress

A PlushDeluxe Waterproof Bamboo Mattress Protector is especially important for memory foam. It prevents liquid from reaching the foam at all — protecting against the moisture damage that is memory foam's biggest vulnerability. The bamboo fabric is breathable, which is important for memory foam that can sleep warm.

Frequently Asked Questions

Can I use a steam cleaner on a memory foam mattress?

No — steam introduces significant moisture into the foam that takes a very long time to dry and can cause mildew. Stick to dry methods (baking soda, vacuuming) and minimal-moisture spot cleaning.

How do I get rid of the new memory foam smell?

New memory foam off-gasses chemicals from the manufacturing process. Remove all packaging and air the mattress in a well-ventilated room for 24–72 hours. Sprinkle baking soda, let sit overnight, and vacuum. The smell typically dissipates within a few days to a week.

My memory foam mattress got wet — what do I do?

Act immediately. Blot up as much moisture as possible with dry towels — press firmly and stand on the towels. Point fans at the wet area and open windows. Do not sleep on the mattress until completely dry. If the mattress was heavily saturated, it may take 24–48 hours to dry fully. Check for mildew smell after drying — if present, the foam may be permanently damaged.