How to Clean Carpet at Home: Stains, Smells and Deep Cleans

How to clean carpet comes down to four things done in order: remove the dry dirt, deal with stains one at a time, wash the carpet with as little water as you can, and get it dry quickly. Most of the damage we are asked about happens when people change that order, or when they reach for more water, more product and more scrubbing because the first attempt did not work.

Start by asking what you actually need. A carpet that looks flat and grey in the walkways needs a deep clean. A carpet with one red mark needs spot cleaning, and washing the whole room will not help. A carpet that smells needs you to find the source first, because perfume and powder only cover it. The table below matches the job to the method, so you do not spend a weekend on the wrong one.

If you are cleaning before moving out, read the section on end of tenancy carpets before you start. What counts there is the condition recorded on your check-in inventory, not how the carpet looks compared with last week.

Every cleaning decision depends on the fibre, so find out before you buy a product. Look for the original receipt, a label on the back of an offcut, or the fitter's paperwork. If you rent, ask your landlord or agent. If nobody knows, treat the carpet as wool, because the gentle method is safe on all of them and the harsh method is not.

Wool is the traditional choice. The Carpet Foundation, which points buyers to independent carpet shops, describes it as soft, warm and resilient, and naturally flame retardant. Which? notes that natural fibres are generally less stain-resistant than synthetics such as nylon. In practice this means liquid gets into the fibre, so speed matters. IICRC, a cleaning industry certification body, points out that coffee and tea have long been used to dye wool rugs, which tells you why a coffee spill on wool can be hard to shift completely.

Polypropylene is the common budget synthetic. The Carpet Foundation lists it as hard wearing and easy to clean, and the retailer tapi explains why: the fibre does not absorb moisture, so spills stay on the surface. It also says the exception is oil, which it calls near impossible to remove with ordinary home methods, and that polypropylene crushes under heavy objects more readily than wool. So a polypropylene carpet forgives a glass of wine but not a dropped slice of pizza.

Nylon, sold in some care guides as polyamide, sits between the two. Which? rates it as more stain-resistant than natural fibres, and Rug Doctor's lukewarm rule applies only to wool and wool mixes, so a nylon carpet can take warmer water. It is still dyed, though. IICRC warns that red food dyes are so close to carpet dye that removing them can be beyond what a householder can do, so treat fruit squash and food colouring with the same urgency on nylon as on wool.

Blends are usually wool mixed with a synthetic. The Carpet Foundation mentions 80/20 and 50/50 mixes, and Brintons sells 80% wool with 20% nylon as soft yet strong. Trade opinion is not settled here. A WoolSafe laboratory study reported by Cleanfax found that an 80/20 blend flattened more and held more soil than matching 100% wool, and that adding nylon did not extend performance life. It was a single study, so we would not change a buying decision on it alone. For cleaning, the rule is simple: if it contains wool, clean it as wool.

Manufacturers' care guides should be your first stop, because a warranty can depend on following them. Brockway, a British carpet maker, and Ulster Carpets both publish guides, and most fitted carpets came with one. Ulster sends readers on to WoolSafe, an organisation that certifies carpet cleaning products as safe for wool. WoolSafe's app lists certified products for wool and synthetic carpets, gives stain instructions, and helps you find approved cleaners. We could not open WoolSafe's own website when researching this guide, so we have relied on its app listing and on Ulster's summary of its rules.

Those guides agree on the basics: speed, blotting, testing first and working inwards. They do not agree on everything, and some home advice you will read online contradicts them. Here is where they part ways, and what we suggest.

Vacuuming costs next to nothing and does more for a carpet than any product. Ulster Carpets says foot traffic causes 80% of all soiling, and Victoria Carpets explains why frequency matters: soil is easy to lift from the surface but much harder once it has worked below the pile. A doormat at each outside door, which Brockway recommends, cuts down what you have to remove at all.

The right setting depends on the pile. Brockway says plain suction is the gentlest and suits loop pile carpets, where a rotating brush can catch and fray the loops, so switch the brush off on an upright. Cut pile carpets are different: Brockway says an upright with a rotating brush works well, and Victoria advises using the brush only occasionally. If you are unsure, try the vacuum on an offcut first, as Victoria suggests. A fuzzy surface after one pass is your answer.

Rubbing feels productive and does two kinds of harm. It pushes the stain sideways into clean carpet, and it untwists the fibres, leaving a pale fuzzy patch that stays after the stain has gone. Brockway warns of pile distortion and Victoria Carpets of fuzzing. Very often that patch, not the stain, is what you end up looking at.

Ulster Carpets adds a calmer point: do not panic, but be quick, because fresh spots come out far more easily. Cavalier Carpets makes the same case for hot drinks in particular, which it says set into the carpet if left. Keep a small kit ready, so you are not hunting for it while the coffee soaks in: white cloths, a spoon, a carpet spot remover suited to your fibre, and a spray bottle of clean water.

Use this table after you have lifted and blotted. Use cold water first on anything unknown: Which? warns that hot water can make some stains worse. Test every product, and rinse and blot between steps. If you use a solvent on a damp patch, wait: Victoria Carpets says dry-cleaning solvent is for dry carpet only.

You can deep clean a small room by hand. Which? sets out a method, and it works, but be honest about the effort. Your arms are doing what a machine's brush and suction would do, and you cannot pull the dirty water back out in the same way. We would do this for a bedroom or a small landing, and hire a machine for anything larger.

Which? suggests a small amount of laundry detergent in warm water, and Ulster Carpets says never to use household detergents on carpet, because of the sticky residue. We side with the makers. Buy a carpet shampoo, ideally WoolSafe approved if there is any wool in the pile, and follow its dilution. It costs little compared with a carpet that re-soils within weeks.

Bicarbonate of soda, or baking soda, is the most repeated home remedy, so here is a fair verdict: it is a useful deodoriser and a poor cleaner. To clean carpet with baking soda, Which? says to sprinkle it over the whole carpet, leave it for at least 15 minutes, or longer for strong smells, and vacuum it up. It works best on a dry carpet with a general stale smell. It does not dissolve a stain or wash anything out.

Two cautions. Our advice is to use a thin layer and empty the vacuum straight after, because fine powder is hard on filters; check your manual if you have a bagless model. And bicarbonate is mildly alkaline, which is the wrong direction for wool, so do not leave it on wool carpets longer than needed, and do not make it into a wet paste.

Vinegar has better backing for marks. Victoria Carpets lists a solution of one part white vinegar to two parts water as a later step for coffee, tea and wine on wool, and Which? suggests the same strength as a home cleaner, or equal parts as a light deodorising spray. Do not use it instead of the blotting and detergent steps.

Do not use the two together. The fizz looks impressive, but Which? explains that they neutralise each other, so you are left with slightly salty water in the carpet. Pick one, for the job it suits.

We would keep bleach off fitted carpet altogether. IICRC says chlorine bleach will take colour out of most textiles, usually leaving a pale yellow or white patch, and that only dyeing or patching can put it right. Some retailers do describe polypropylene as bleach-cleanable, and that is true of certain ranges. Online Carpets limits it to synthetics approved as bleach-safe, which is the point: it is a feature of a particular carpet, confirmed by its maker, not a feature of synthetics in general. Oxygen bleach spot cleaners are not automatically safer. IICRC warns they can cause permanent marks if they are not fully rinsed.

The bigger issue is safety, and it is more relevant to carpets than people realise. GOV.UK guidance says bleach mixed with acids such as vinegar produces chlorine gas, and mixed with ammonia produces chloramines, which are highly irritating to the airways. HSE adds that bleach gives off chlorine gas in contact with acidic fluids, and it names urine. So pouring bleach onto a pet accident, or onto a spot you have already treated with vinegar, is exactly the wrong thing to do.

Find what is causing the smell first, because the fix is different for each. A general stale smell in a room with a dog or a smoker usually comes from the top of the pile. Vacuum slowly, use baking soda, wash the pet's bedding and air the room well. If that makes no difference after a couple of tries, the carpet needs a proper wet clean.

Pet urine is harder because it rarely stays in the pile. It can go through to the backing, the underlay and the floorboards, and that is where the smell lives. IICRC says urine can also react slowly with dyes and fibres over days or months, causing permanent changes, some of which show only under UV light. A real mydeposits case shows how far it can go. A cat had been kept against the tenancy agreement, the carpet was cleaned, and the cleaner advised that the smell would stay unless the floor was treated. The carpet was replaced and the boards treated, and the adjudicator awarded £540 of the £650 in dispute.

So our advice for an old urine smell is to check before you spend money. Sniff at floor level, and if you can, lift a corner and look at the underlay. If it has reached the underlay or the boards, surface cleaning alone will disappoint you, and a professional should tell you so before you book. Which? says enzyme cleaners work only on organic smells such as urine and vomit. Use one with enough dwell time on a fresh accident, but do not expect it to reach what is under the carpet.

A musty smell is a separate problem, and cleaning can make it worse. IICRC says the source is often the backing or the floor beneath, and that a damp underlay can stay wet long after the surface feels dry. Do not perfume over it. Look at the next section first, and if the smell appeared after a leak or in a corner with condensation, deal with the moisture before anything else.

Hot water extraction is what most people mean by steam cleaning. Water and detergent are sprayed into the pile and sucked back out in one movement. The machines you hire from a supermarket work on the same idea as professional kit, but on a smaller scale. The gap between them is in the suction, the drying power, and the person holding the wand.

Hire is a sensible choice for a synthetic carpet with ordinary soiling. Rug Doctor quotes hire from £27.99 for 24 hours and £32.99 for 48, from supermarkets and DIY shops, and you buy the detergent as well. It says its machines recover about 80% of the water they spray, so the remainder stays in the carpet. That is why its instructions are so firm about one pass, or two at most on heavy stains. Which? notes that for very soiled carpets, doing it yourself can work out dearer than paying a professional.

Before you hire, check Rug Doctor's own exclusion list. It says not to use its machine on sisal or jute, natural fibre and seagrass matting, Berber or Flotex, oriental rugs, silk, or anything that is not colourfast. Those belong with a specialist, and so does any carpet that is valuable, old or under warranty if you are unsure.

Rug Doctor says a carpet usually takes about two to four hours to dry after its machine, and that ventilation, an unheated room and the temperature outside all affect this. That is a fair figure on a mild day with the windows open. A north-facing London flat in January, with the washing drying indoors, will take much longer, so plan the clean around the weather if you can. Do the job in the morning, not the evening before you need the room.

Keep the air moving. Which? recommends warming the room and opening windows, or keeping internal doors open if you cannot. It suggests fans and a dehumidifier if you need them, and says to avoid hairdryers and space heaters, which can burn the carpet. Rug Doctor advises having the heating on, but not at full. Keep off the carpet while it is damp, and put furniture back only when it is fully dry.

Mould is the reason to take this seriously. GOV.UK's guidance on damp and mould in the home describes mould as a fungus that grows in moist conditions, and lists the underside of carpets among the hidden places it can grow. Its health advice is plain: damp and mould mainly affect the airways and lungs, and people with asthma, allergies or other lung conditions, weakened immune systems, children and older people are more at risk. Please take this into account if someone at home fits that list.

We could not find a reliable figure for how quickly a damp carpet goes mouldy, and we would rather not invent one. Our working rule is this: if the carpet still feels damp the next morning, or the room smells musty, act on it that day. Press a dry white paper towel into the pile, including near the walls. If it comes up damp, run a dehumidifier or fan and open the windows. If you find visible mould on the back of a carpet or on the underlay, do not clean over it. GOV.UK says absorbent materials such as carpets may need to be thrown away if mouldy, and that lifting them can release spores. Renters should report it to their landlord in writing.

Over-wetting is the root of most cleaning damage. When water soaks past the pile into the backing and underlay, four things can go wrong, and all of them are easier to avoid than to fix. This is why Ulster Carpets tells people not to over-wet, and why Rug Doctor limits passes.

Rippling is the most common, and often it settles down. IICRC says moisture makes the carpet backing swell, and that a loosely fitted carpet will usually lie flat again once dry. It advises doing nothing for 48 hours. If waves stay after that, the carpet probably needs re-stretching by a fitter, which is a fitting issue and not a stain issue.

Browning is a yellow or brown tint that appears as the carpet dries. IICRC explains that it happens when plant-based materials such as jute or cotton get wet and dry slowly, and it tells householders not to try fixing it themselves. Pale carpets show it first, and some older wool carpets have jute in their backing, so keep them on the lighter side of wet.

Wicking is the stain that comes back. IICRC describes residue rising from the base of the yarn to the tips during drying. Let the carpet dry fully, then blot and repeat, weighing a folded cloth down on the spot overnight. Fast re-soiling is the fourth problem. A carpet that looks dirty again within weeks usually has detergent left in it, which is why rinsing matters more than the amount of soap.

Shrinkage is rarer, and much more expensive. Natural fibres and backings can tighten as they wet and dry, and in fitted carpet this can pull the edges from the gripper or leave gaps at the wall. We could not open a UK maker's published figure, so we will not quote one. Our advice is the same as for all the problems above: use less water and take particular care with wool and woven carpets. If your care guide says professional cleaning only, follow it, as a wet clean at home could affect any warranty claim.

A clean carpet at move-out is measured against your check-in inventory. The Tenancy Deposit Scheme says you should leave the property as clean as it was at the start, and that cleanliness is not subject to fair wear and tear, so an old carpet still has to be clean. If the inventory says it was professionally cleaned, TDS says you need to reach that same standard. Look at the wording and photos before you decide how much cleaning you need. We cover the money side in our guide to cleaning deductions from a tenancy deposit.

You do not have to pay a professional just because a clause says so. The Deposit Protection Service says a landlord cannot require you to hire professional cleaners, because you may be capable of doing it yourself, and that a clause tied to the check-in standard is the fairer one. The Tenant Fees Act 2019 applies in England. It limits what a landlord can charge to the list in Schedule 1, which includes damages for a breach of the tenancy, and Shelter says all other payments are prohibited. A flat fee for a carpet clean is not on that list, but a deduction from the deposit for a carpet left dirtier than at the start can still be claimed. The Act was amended by the Renters' Rights Act 2025 from 1 May 2026, so check current guidance if you are in a dispute.

Wear and damage are treated differently. The Deposit Protection Service says light marks may have to be viewed as unavoidable, while damage through negligence, such as iron burns or nail varnish, can leave a tenant liable. Replacement claims are reduced for age. In one mydeposits case, a tenant who burned a two-year-old carpet paid £195 of the £325 replacement cost, while claims for older worn carpets failed. Good evidence counts both ways: in another mydeposits case, a brief check-in report limited the landlord to a small award for carpet cleaning, despite a large stain at check-out.

Our advice is to start with a good vacuum and treat stains a week before you leave, not on the last day, so any damp has time to dry and any wicking can be dealt with. Then clean the whole carpet if the inventory calls for it. Keep your receipts, and take dated photos of each room in good daylight. Tell your landlord early about any stain you could not remove. A stain treated with bleach or a scrubbed-out patch is usually worse than the original mark. Our end of tenancy cleaning checklist covers the other rooms, and our guide to what end of tenancy cleaning costs helps with the budget.

Cleaning a carpet properly is also how you find pests. Bare tracks along the skirting, loose tufts under the bed, or sandy grit that keeps returning in the same spot are not cleaning problems. Brockway's care guide makes a specific point of keeping up maintenance near skirting boards and under beds and heavy furniture, because those are the undisturbed places moths favour.

Vacuum those edges with the crevice tool, and move furniture when you do. Do not assume that a wet clean will sort the problem out, because hidden larvae need a proper plan. If you see small holes, silk tubes or larvae, stop and identify what you have. Our guide on how to get rid of moths covers carpet edges in detail, and our carpet beetle guide explains what woolly bears look like. If it is confirmed, see moth treatment or carpet beetle treatment.

Order matters if a carpet is being treated. Treatment sheets for insects often tell you not to vacuum or wash the floor for a set period, because that removes the insecticide. Follow the sheet, and do not book a carpet clean until the period has ended. The same applies after flea treatment, which is covered in our flea guide. If you have noticed marks on a mattress as well as the carpet, our guide on how to clean a mattress is the next one to read.

Our carpet cleaning service is a hot water extraction clean with stain and odour treatment and a quick-dry finish. It starts from £60 per visit. One carpeted room added to another booking is £35. The number of rooms, the carpet material, the staining and the access and drying conditions all affect the quote, so tell us the rooms, point out any stains and pet areas, and let us know the material if you know it. The price and what is included are confirmed in writing before any work is booked.

If you are moving out, our end of tenancy cleaning is priced by property size, and the premium rates include the carpets. End of tenancy cleaning comes with our 48-hour re-clean guarantee, which is a promise to come back and re-clean. It is a promise about our work, not about what happens to your deposit, which depends on your inventory and your landlord. Ask us about adding mattress cleaning or upholstery cleaning, and our cleaning services page lists the rest.

We are based on Clements Road in Ilford, cover London and carry public liability insurance. Our phone lines are open Monday to Saturday, 8am to 8pm. Our prices page has the full list, and you can contact us with photos if you want an opinion before you hire a machine.