Every bed has dust mites. Yours, ours, the most expensive hotel suite in London. They are microscopic, they feed on the skin cells we all shed overnight, and a warm, slightly humid bed is the best habitat they will ever find. The difference between dust mites being a harmless fact of life and the reason you wake up congested every morning is not whether you have them. It is how you manage them.
Quick answer: You cannot remove every dust mite, but you can cut their numbers right down and keep them there. Wash bedding weekly at 60 degrees, air the bed each morning, keep the bedroom humidity below 50 percent, and seal your mattress and pillows under washable, allergen-proof covers so the mites left in the core can no longer reach you.
Contents
What Dust Mites Are, and Why Your Bed Suits Them
The Signs They're Affecting Your Sleep
How to Get Rid of Dust Mites in Your Bed
What Dust Mites Are, and Why Your Bed Suits Them
Dust mites are microscopic relatives of spiders, measuring around 0.25mm and far too small to see without magnification. They do not bite, sting or burrow. They simply live in soft furnishings and eat shed skin cells.
The problem they cause is indirect. According to Allergy UK, it is not the creature itself but its droppings that trigger the allergy, and those allergen proteins keep working even after the mite has died. That is why a deep clean matters as much as killing live mites.
Your bed is their ideal home for three reasons:
• Food: you shed skin cells all night, every night, directly into the bedding.
• Warmth: your body heats the bed to their preferred temperature for eight hours at a stretch.
• Moisture: overnight sweat and breath keep the humidity in mattresses and pillows exactly where mites thrive.
That is why dust mite problems concentrate in the bed rather than in carpets or curtains. The food, warmth and moisture all meet in the same place, and different parts of the bed collect them for different reasons:
| Where they gather | Why it collects mites | The fix |
|---|---|---|
| Mattress core | Years of skin cells and absorbed moisture, and you cannot wash it | Seal it under a washable, waterproof protector |
| Pillows | Closest to your face, warm and damp from breath every night | Use a washable pillow, wash covers hot, replace regularly |
| Duvet and sheets | Trap shed skin and moisture across the whole surface | Wash weekly at 60 degrees, air the bed each morning |
The Signs They're Affecting Your Sleep
Because mites don't bite, the evidence is allergic rather than visible. The tell-tale pattern is symptoms that are worst in bed and shortly after waking, then ease through the day:
• Morning congestion or sneezing fits that fade by mid-morning.
• Itchy or watery eyes on waking.
• Night time coughing or wheezing, particularly for asthma sufferers.
• Eczema flare-ups that improve when you sleep somewhere else.
That last one is the most useful test. If a week away consistently improves your symptoms and the first night home brings them back, your bedroom is the likely source. Dust mite allergy is common: Allergy UK estimates that around 30 percent of people with an allergic condition such as asthma, eczema or rhinitis have had to change something about how they live to reduce their reactions.
Persistent or severe symptoms are always worth discussing with a pharmacist or GP, and the NHS has practical guidance on reducing dust mites at home. The bedroom-level fixes below help regardless.
How to Get Rid of Dust Mites in Your Bed
You will never remove every mite, and you don't need to. The goal is to knock the population down and then hold it down. The knock-down:
1. Wash bedding hot. The NHS advises a 60 degree wash, which kills mites; cooler washes mostly just relocate them. Check the label first: our guide to washing pillows properly covers which fills tolerate what, because memory foam must never go in the machine.
2. Freeze what can't be washed hot. Delicate items and children's soft toys can go in a sealed bag in the freezer for 24 hours, then a cool wash to remove the allergens.
3. Vacuum the mattress itself. The upholstery attachment, slowly, over the full surface and into the seams and border. Do the bed base too.
4. Air the bed daily. Throw the duvet back when you get up instead of making the bed immediately. Thirty minutes of airing lets moisture evaporate, and a drier bed supports fewer mites.
5. Drop the bedroom humidity. The NHS suggests keeping indoor humidity below 50 percent. Ventilate daily, keep the door open where practical, and dry laundry somewhere else. Mites struggle in dry air.
The realistic goal: you are not sterilising the bed, you are managing a population. Hot washing kills the mites; a barrier stops the survivors reaching you.
The Barrier Method: Keeping Them Out
Washing is the reset. The barrier is what stops you having to do it constantly. The logic is simple: mites live in the mattress and pillow cores where you can't wash, so you put a washable layer between the core and you. The mites underneath are sealed away from their food supply, and the allergens stay off your skin and out of your airway.
A proper mattress protector does this job for the biggest item in the room. The REM-Fit Tencel Cool Mattress Protector, a Good Housekeeping Winner in 2026, pairs a cooling Tencel surface with a waterproof membrane, which addresses both halves of the problem at once: the physical barrier keeps allergens off your skin, and the moisture that mites depend on never reaches the mattress core. A cooler, drier sleep surface is itself a worse habitat for mites.
REM-Fit Tencel Cool Mattress Protector
A washable, waterproof barrier that seals the mattress core and keeps allergens off your skin. Good Housekeeping Winner 2026.
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Your pillow needs the same thinking. It sits closest to your face, and it soaks up warmth and moisture from your breath all night, so it is one of the mite hotspots that matters most. A washable pillow with a cover you can launder hot lets you reset that hotspot regularly rather than sleeping on years of build-up.
REM-Fit 500 Cool Gel Pillow
A cooling gel pillow with a removable, washable cover, so a key mite hotspot stays fresh. Good Housekeeping Winner 2026.
Shop the 500 Cool Gel PillowRound the barrier out with the full mattress protector collection and a fresh pillow from the pillows collection, then keep a weekly hot wash going on the covers. If allergies are your main reason for reading this, our guide to the best mattress for allergies and asthma goes a step further on breathable, low-allergen bed setups.
The Myths Worth Ignoring
"Your mattress doubles in weight from dust mites"
You will find this claim on mattress websites everywhere. There is no credible evidence for it. It appears to be marketing folklore, repeated for decades because it sells mattresses, not because anyone has demonstrated it. Old mattresses do accumulate skin cells, moisture and allergen, which is reason enough to replace and protect them, but the doubling figure is invention.
Two more worth clearing up. First, no spray, plug-in or ultrasonic gadget eliminates dust mites from a home. At best some products reduce numbers temporarily; none replaces the washing, barrier and humidity routine above, and the money is better spent on a washable protector. Second, bite marks are not dust mites. Mites do not bite, so waking with itchy red marks points to something else, most commonly bed bugs, which are a different problem needing a different response. Getting the diagnosis right matters, because the treatments barely overlap.
Your Dust Mite Questions Answered
Can you see dust mites?
No. They are around 0.25mm long and effectively invisible to the naked eye. Anything you can see crawling in your bed is something else.
Do dust mites bite?
No. They have no interest in living skin. The itching and irritation people attribute to bites is almost always an allergic reaction to the proteins in their droppings.
What temperature kills dust mites?
A 60 degree wash kills them reliably. Below that, washing removes allergens and some mites but leaves survivors, which is why the barrier approach matters more than any single wash.
How often should I wash bedding to control dust mites?
Weekly at 60 degrees for sheets, pillowcases and duvet covers is the standard advice. Keep the mattress and pillows under washable protectors and launder those covers on the same cycle.
Does an old mattress have more dust mites?
Generally yes. Years of accumulated skin cells and absorbed moisture make an older, unprotected mattress a far larger reservoir than a newer one kept under a washable protector from day one. It is one more reason to fit the protector with the new mattress rather than after the problem starts.
The short version
Wash hot, air the bed, keep the room dry, and put a washable barrier between you and the places you can't wash. For more on how bedroom habits shape rest, see the UK Sleep Statistics 2026.
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