How to clean a mattress: the Mrs Hinch method
Several of the cleaning methods popularised on social media are sound. One of the most shared is the one most likely to ruin a mattress.
Mrs Hinch is the cleaning influencer Sophie Hinchliffe, whose following made a set of household cleaning routines widely shared in the UK. A large amount of mattress cleaning advice now circulates under her name or in her style, much of it from followers rather than from her directly.
This page does not attribute specific claims to any individual. It takes the methods that circulate under this heading and assesses them on merit.
The rule that governs all of this
A mattress cannot be properly dried at home. Water goes in easily and comes out slowly, and once moisture reaches the foam or the spring unit it can sit there for days.
That is how mould grows inside a mattress, which is worse than the stain you were treating and cannot be reversed. Use the least liquid that works, and dry it completely.
The methods, assessed
| Method | Verdict |
|---|---|
| Bicarbonate of soda, sprinkled and vacuumed | Sound, in moderation. Good for odour. |
| Vacuuming with the upholstery tool | Sound. The most underrated step. |
| Enzyme cleaner on organic stains | Sound. The right chemistry. |
| White vinegar solution | Partial. Helps odour, does not break down uric acid. |
| Washing-up liquid and warm water | Risky. Too much liquid, and warm water sets blood. |
| Steam cleaning | Do not. The most damaging thing on this list. |
| Leaving bicarb on for many hours | Counterproductive. It absorbs moisture you then cannot remove. |
Bicarbonate of soda: sound, with a limit
The most widely shared method, and it does work for what it is: absorbing odour and surface moisture. It is cheap, it is not going to damage anything, and vacuuming it off removes debris along with it.
The limit is duration. The advice often says to leave it several hours or overnight, and bicarbonate of soda absorbs moisture from the air as well as from the mattress. Left long enough in a humid room it draws damp in, and what remains embedded in the fabric attracts more later.
A light sprinkle, an hour, then thorough vacuuming gets the benefit without the problem. Use the upholstery tool and overlapping passes, and do the sides and seams.
Steam cleaning: the one to avoid entirely
This is how sound mattresses get destroyed
Steam drives moisture deep into the fillings and the spring unit. It causes mould in foam and rust in springs, and neither is recoverable.
Manufacturers frequently prohibit it outright, so using a steam cleaner can void your guarantee.
It is popular because it looks thorough and the surface comes up clean. The damage is internal and shows up months later as a musty smell that will not shift.
The same applies to carpet washers and wet vacuums: same mechanism, more water.
White vinegar: helps, but not with what people think
Vinegar is mildly acidic and does deodorise, so it has a genuine effect on general staleness.
What it does not do is break down the uric acid crystals in urine, which are what cause the smell to return weeks after cleaning. Only an enzyme cleaner does that.
So for urine specifically, vinegar is a partial fix that smells strongly itself for a day or two. For general freshening, it is fine and cheap.
What the popular methods leave out
Drying. Almost none of the shared routines emphasise it, and it is the step that decides whether the mattress survives. A window open and a fan across the surface, and never remake the bed over damp fillings.
Rotation. Head to foot every two to three months does more for a mattress than any cleaning routine.
The base. Slat gaps over about 7.5 centimetres cause sagging and void most guarantees, and no amount of cleaning addresses a mattress that is failing because of the frame.
Prevention. A protector fitted from the first night makes most of this unnecessary, and a stain voids most guarantees absolutely.
Drying, which is the step that actually matters
This is where mattresses are lost, and it is the step people skip because the stain has gone and the job feels finished.
Open a window and put a fan across the surface. Moving air does far more than heat.
Leave the mattress uncovered and unmade for as long as it takes, which can be a full day for anything more than a small mark.
Stand it on edge if you can, so both faces are exposed.
Do not put bedding back on a damp mattress. A made bed over damp fillings is the exact condition mould needs.
Avoid a hairdryer held close, because heat can damage foam. Ambient airflow is better and safer.
Before you treat anything under guarantee
A stain voids most mattress guarantees absolutely. If the mattress is under guarantee and visibly damaged, photograph it and speak to the retailer before cleaning, because cleaning alters the evidence.
Your statutory rights sit with whoever sold it to you rather than the manufacturer. Under the Consumer Rights Act 2015 you have up to six years to bring a claim in England, Wales and Northern Ireland, five in Scotland, so keep the proof of purchase.
This is general information rather than legal advice, and Citizens Advice is the right starting point for a specific situation.
Prevention is the only strategy that works
Since there is no home deep clean, the protector is the whole game, and at 20 to 40 pounds it is the highest ratio of value to cost anywhere in bedding.
Buy a breathable protector, not a cheap plastic-backed one. A breathable membrane passes water vapour while blocking liquid; a laminated layer blocks air too and makes the whole bed warmer and clammier.
Buy two, so one is always clean. A protector in the wash is a mattress unprotected.
Check the depth. Modern hybrids run 28 to 35 centimetres and most protectors are cut for around 25, and one that pings off a corner ends up in a drawer.
Related reading
Specific stains
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Questions people ask
Does bicarbonate of soda clean a mattress?
It absorbs odour and surface moisture, which is genuinely useful. Use a light sprinkle for about an hour then vacuum thoroughly, because left for many hours it draws moisture from the air and the residue attracts more later.
Should I steam clean my mattress?
No. Steam drives moisture deep into the fillings and the spring unit, causing mould and rust, and manufacturers frequently prohibit it, so it can void your guarantee.
Does white vinegar work on a mattress?
It deodorises and helps with general staleness. It does not break down the uric acid crystals in urine, which is why the smell returns after cleaning, and only an enzyme cleaner does that.
What do popular mattress cleaning methods miss?
Drying, which is the step that decides whether the mattress survives, along with rotation, checking the bed base, and fitting a protector, which makes most cleaning unnecessary.