You watched the spot disappear. The carpet looked right when we left. Then, a few hours later, a faint shadow of the same mark is back in the same place. It is the most common call we get after a clean, and it is a fair thing to be annoyed about.

The good news is that it almost always has a simple explanation, and it can almost always be fixed. This page explains what is going on, which spots do it, what we will do about it, and what to do in the meantime.

It is worth saying at the start: you have not done anything wrong, and in most cases neither have we. It is simply how carpets behave when something has gone deeper than the surface. Knowing that makes the next step much less stressful.

A carpet is not just the fibres you see. Beneath the pile there is a backing, and beneath that, usually, an underlay. When a drink, an accident or a spill soaks in, it does not stop at the surface. It runs down into those lower layers and dries there.

When we clean, we treat the spot and extract it from the pile. On the surface, it is gone. But the carpet is now damp, and as it dries, the moisture moves upward. It travels up the fibres to the tips, where it leaves into the air, and it carries anything dissolved in it on the way. Whatever was left in the backing or the underlay rides up with it and is left behind at the top.

That is wicking. It works the same way as a strip of kitchen roll dipped in a cup of tea: the colour climbs. So a spot that was gone at 2pm can be faint again by 8pm, once the carpet has had time to dry. Nothing new has been spilled. It is the same mark, arriving from below.

It shows up during drying, not straight away, which is why you often notice it after we have left. Drying usually takes six to twelve hours, sooner with warmth and airflow and longer without, much like washing on a line, so the full picture is not clear until then.

It also explains why a wicked spot usually looks different from the original. It tends to be lighter, browner and softer at the edges, often with a slightly darker ring where the drying stopped. That ring is a good sign it is wicking and not a new stain.

What they have in common is depth. A spill that stayed in the top of the pile is lifted out in the clean and stays gone. A spill that went through to the backing is a different job, because the part you can see is only the top of it.

• Pet urine, especially where an animal has used the same spot more than once.
• Old drinks: tea, coffee, juice, cola and wine, particularly the sugary ones.
• Any large spill that soaked straight through to the backing and underlay.
• Spots treated before with shop sprays or foams, which leave their own residue.
• Marks that were scrubbed hard, which pushes them deeper.

Size can be misleading too. A cup of tea that leaves a mark the size of a coaster on top can spread into a patch the size of a dinner plate in the underlay. The clean deals with the coaster. The dinner plate is what wicks.

Shop products deserve a special mention. Many are made to be sprayed on and left, not rinsed out. Over time they build up in the base of the carpet, and when it gets wet again during a clean, that residue climbs back up with everything else. Some also leave a sticky film that catches dirt, so the spot looks darker each time.

Other things can wick in the same way: an old leak from a radiator or a plant pot, or a patch where water once came through from above. They behave like a spill, rising as the carpet dries, and they are treated the same way.

None of this means your carpet is dirty or neglected. Most homes with children or pets have at least one spot like this. It is simply the one place in the room where the clean has more to do.

A carpet clean is designed to clean the carpet, not soak it through to the floor. That is deliberate. If we put enough water down to flush the underlay, the carpet would stay wet for days, the backing could shrink, and brown patches could appear across the room. Controlled moisture is what keeps your carpet safe. It is the same reason we use strong extraction and dry pods: to get the water back out, not leave it in.

The trade-off is that something sitting deep in the underlay is not always fully reached on a first pass. The clean has done its job on what it can safely reach. What is coming up now was below that line.

When It Is On Us

We will be straight about this. Wicking can also be a sign that too much water went in, or not enough came back out. If the whole carpet has a brownish tinge as it dries, if several spots have come back across the room, if you can see tide marks, or if it is still wet the next day, that points to the clean rather than the spill. If that is the case, it is our fault, and we will say so and put it right.

Either way, you do not need to work out which it is. Send us a photo, and we will tell you honestly what we think has happened.

We judge a clean a week later, not on the day. A carpet that looks right at 2pm and wrong at 8pm has not finished being cleaned yet, and we treat it that way rather than as a closed job.

The Golden Guarantee is simple: if you’re not satisfied with the clean, we come back free of charge until you’re 100% satisfied. A spot that has wicked back is exactly what it is for. You do not need to argue the case. Tell us, and we book you back in.

On the return visit, we treat the spot again once the carpet has fully dried. That timing matters. The first clean has already drawn much of the residue up towards the surface, so a second pass can reach it and extract it properly. In most cases, that second visit finishes it.

• We arrange a time that suits you, once the carpet is fully dry.
• We look at the spot and ask how it has changed since the clean.
• We treat it again with a method matched to what caused it.
• We extract it properly and tell you what to expect as it dries this time.

For Pet Urine, A Different Treatment

Urine is the one that most often needs more than a repeat clean. It dries into salts in the backing and underlay, which bring back the smell and the mark whenever the air gets damp. For urine, we check the area with a UV torch to find the full extent, including patches you cannot see, and use a specialist treatment that breaks it down at the source before we flush it out.

If urine has soaked into the underlay over a long time, we will tell you honestly that a section of underlay may need replacing for the smell and the mark to go for good. We would rather say that than keep coming back for a problem that cleaning alone cannot finish.

Whatever the cause, we keep going until it is right. If a second visit does not finish it, we come back again, and we tell you plainly at each step what we think is going on and what is left to try.

The natural reaction is to grab a cloth and a spray and deal with it yourself. Please do not. It almost always makes the job harder, and it can turn a spot we could lift on a second visit into one that is far more stubborn.

• Do not scrub it. Scrubbing pushes the mark deeper and roughens the pile.
• Do not put a shop product on it. It adds more residue to the spot we need to clear.
• Send us a photo, in daylight if you can, with something next to it for size.
• Tell us when the carpet is fully dry, so we see what is left once wicking has finished.
• If it is pet urine, keep pets off the spot so it does not get used again.

Waiting for the carpet to dry fully is the step people find hardest, but it matters. While it is still drying, more can rise to the surface. Treat it too early and we are cleaning a moving target. Once it is dry, what you can see is what we need to treat. It also means we can plan the return visit properly rather than guessing.

If the spot is still damp and fresh-looking, you can blot it gently with a clean, dry white cloth. Blot, do not rub. Then leave it alone and let us know. Do not press hard or stand on the cloth, as that pushes more down into the backing.

If you are not sure whether it is the same spot or something new, send the photo anyway. It takes us a minute to look, and it is far better than guessing or trying a remedy that makes it harder to treat.

The best way to avoid wicking is to know about the spot before we start. If you tell us that a patch has had pet accidents, a big spill that went right through, or a few rounds of shop sprays, we treat it differently from the start. We give it more time and the right treatment, and we tell you honestly if it may still need a second visit. It is one of the most useful things you can tell us.

It also helps to know that one spot coming back is not a reason to worry about the rest of the carpet. The areas that were only surface-dirty stay clean. Wicking is usually limited to the patches with a history, and once those are treated properly they tend to stay gone.

Between cleans, the old advice holds. Blot fresh spills straight away with a clean, dry cloth, work from the outside in, and keep shop products off the carpet, especially wool. The less that reaches the backing, the less there is to come back up.

If you have a pet with a favourite spot, it helps to treat that area as an ongoing job rather than a one-off. Catching new accidents quickly, blotting them and letting us know means far less ever reaches the underlay.

And if a spot does come back after one of our cleans, tell us. It is part of the job, not a favour, and we would much rather hear about it than have you live with it. A quiet, unhappy customer helps nobody, least of all us.

Why Prestige Refresh

When customers tell us why they chose us, the same four reasons come up. Each one is a promise we can keep on every visit.

What Customers Say

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Quick Answers

Is it normal for a stain to come back after carpet cleaning?

It is common, especially with pet urine, old drinks and large spills that went through to the backing. It happens because residue deep in the carpet rises as it dries. It is usually fixable with a second treatment once the carpet is fully dry, and that second visit is free.

Will I have to pay for you to come back?

No. Under the Golden Guarantee, if you’re not satisfied with the clean, we come back free of charge until you’re 100% satisfied. A spot that has wicked back is covered, and there is nothing to prove.

How long should I wait before telling you?

Tell us as soon as you notice it, and send a photo. We will usually ask you to let the carpet dry fully first, which usually takes six to twelve hours, sooner with warmth and airflow and longer without, much like washing on a line. That way we can see what is left before we treat it again. If it is pet urine and the smell is strong, tell us straight away and we will advise you while it dries.

Can I use a carpet spray on it while I wait?

Please do not. Most shop products add residue to the very spot we need to clear, and some can bleach or mark wool. They can also leave a ring that is harder to shift than the spot itself. If the spot is damp, blot it gently with a clean, dry white cloth and leave the rest to us.