How Dirty Is Your Mattress and How to Clean It

 

Most of us spend around a third of our lives in bed, yet the mattress – that soft, welcoming surface we lie on every night – is often the most neglected item in the home when it comes to its clean condition. While we regularly wash our bed linen, the mattress itself quietly collects a build-up of allergens, bodily fluids, dust mites, and bacteria over time.

In this article, we explore just how dirty your mattress might be, why that matters for your health and sleep quality, and how to clean it properly – whether with a DIY approach or professional help.

 

Why Your Mattress Might Be Dirtier Than You Think

Your mattress absorbs everything. Sweat, dead skin cells, hair, body oils, drool, and even microscopic particles from the environment gradually accumulate in the fabric and foam layers. Over time, this creates the perfect environment for allergens, mould, bacteria and dust mites to thrive.

 

Shocking stats to consider:

• The average person sheds up to 500 million skin cells per day, many of which end up in your bed.
• A mattress can host up to 10 million dust mites, according to the British Allergy Foundation.
• Fungal spores, pollen, and indoor pollutants also settle into the fibres, especially if windows are left open or pets share your bed.
• If you’ve ever experienced sneezing, congestion, itching or even worsening asthma during the night, your mattress could be part of the problem.

 

Signs Your Mattress Needs a Deep Clean

Even if your mattress looks clean on the surface, there are clear signs it’s due for some attention:

• Musty or sour odours – often a sign of trapped sweat and bacterial growth
• Unexplained allergy flare-ups – especially at night or first thing in the morning
• Visible stains – such as sweat rings, urine or accidental spills
• Discolouration – from age, sweat and oxidation
• Increased dust – in the bedroom, especially on the bedframe or headboard

 

Step-by-Step: How to Do Mattress Clean at Home

 

If you’re not ready to call in the professionals just yet, you can still give your mattress a good refresh with a few simple tools and household ingredients.

 

1. Strip the Bed Completely

Remove all sheets, pillowcases, mattress protectors and toppers. Wash everything in hot water (at least 60°C) to kill dust mites and bacteria.

 

2. Vacuum Thoroughly

Use a vacuum cleaner with an upholstery attachment to hoover the entire surface, paying special attention to seams, crevices, and edges where dirt and skin cells collect.

 

3. Tackle Stains Naturally

For light stains:

• Mix a small amount of bicarbonate of soda and water into a paste.
• Dab onto the stain (don’t rub), leave for 30 minutes, then blot with a clean cloth.
• For tougher stains (sweat, urine, or blood):
• Use a mixture of hydrogen peroxide (3%), a few drops of dish soap, and baking soda.
• Spray lightly and blot repeatedly, taking care not to soak the mattress.

Avoid using too much liquid, as excess moisture can promote mould growth deep inside.

You may also like: How to clean the most stubborn stains at home?

 

4. Deodorise with Bicarbonate of Soda

Sprinkle a generous amount of bicarbonate of soda evenly across the surface and leave it for at least 8 hours – or overnight if possible. This will absorb odours, moisture, and refresh the fabric.

Then, vacuum again thoroughly.

 

5. Air It Out

If the weather allows, open windows and let natural sunlight and fresh air reach the mattress. UV rays can help neutralise bacteria and dry out any lingering moisture.

 

How Often Should You Clean Your Mattress?

 

Here’s a recommended mattress maintenance schedule:

• Vacuum: Every 1–2 months
• Spot clean stains: As needed
• Deep clean at home: Every 6 months
• Professional clean: Annually, or every 6–12 months depending on use

 

When to Call in the Professionals?

While a DIY clean can help with surface dirt and smells, some mattresses require a deeper treatment, especially if:

• You’ve had the mattress for over 5 years without professional cleaning
• There’s mould or mildew odour present
• The mattress has heavy or set-in stains
• You suffer from chronic allergies or respiratory issues
• You manage a property with multiple occupants (e.g. rentals, B&Bs)

Professional mattress cleaning uses commercial-grade equipment like hot water extraction and UV sanitation, which can penetrate deeper layers and eliminate dust mites, bacteria, and allergens far more effectively.

At Merci Cleaning, our expert team provides cleaning services for all mattress types, helping to restore freshness and extend the lifespan of your mattress.

 

Final Thoughts

Your mattress is one of the most used – and most ignored – items in your home. Yet a clean mattress doesn’t just look better; it promotes better sleep, reduces allergen exposure, and supports long-term health.

Taking the time to properly care for your mattress is a small investment in your comfort and well-being. And when in doubt, call in the experts.

Need help restoring your mattress to a fresh, hygienic state? Contact us today for a free quote or expert consultation. You can find more info about our service at Merci Cleaning London or on our official Facebook page. 

You may also like: 5 reasons for hiring a professional house cleaner

 

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