One of the questions I have heard many times over the years is, “Why does my carpet get dirty again so quickly after it has been professionally cleaned?”
There are actually several reasons this can happen, but after more than 56 years in the carpet-cleaning business, I believe there are two primary explanations.
The first—and probably the most common—is that the carpet was not cleaned properly in the first place.
The second is that the carpet may not have actually become dirty again at all. Soil that remained in the carpet may have wicked back to the surface as the carpet dried.
Let me explain both.
Sometimes the Problem Is How the Carpet Was Cleaned
Professional carpet cleaning is much more complicated than simply putting cleaning solution on a carpet and extracting it.
There are several things that have to work together: the proper cleaning chemistry, the correct amount of solution, appropriate dwell time, agitation when necessary, and thorough rinsing and extraction.
One of the biggest misconceptions I see is the idea that if a carpet is very dirty, you simply use more detergent.
That is not necessarily true.
Cleaning agents need the proper amount of time to work on the fibers and help break down and suspend the soil. But more is not always better. Some cleaning products contain ingredients designed to help penetrate the soil. Used improperly or left working too long, those chemicals can sometimes penetrate farther into the fiber than intended.
Agitation can also be very helpful, but it has to be appropriate for the carpet. Too much or the wrong type of agitation can physically distort the pile.
And then there is rinsing.
After the soil has been suspended, it is important to remove both the soil and as much of the cleaning solution as possible. Some cleaning products are specifically formulated so that small amounts of residue will dry and crystallize and later be removed by normal vacuuming. But excessive residue, the wrong chemistry, or inadequate rinsing can leave behind material that attracts new soil.
That can make a carpet appear to re-soil unusually quickly.
There are many excellent professional carpet cleaners, but carpet cleaning is a skill. Knowing how to operate a machine is only part of the job. Understanding the carpet, the soil, the chemistry and the cleaning process comes with proper training and experience.
Sometimes the Carpet Didn’t Re-Soil at All
There is another possibility that homeowners often don’t realize.
If a carpet was heavily soiled, some of that soil may remain deeper in the carpet even after cleaning. As the carpet dries, moisture can move upward and carry some of that remaining soil back toward the surface.
This is commonly referred to as wicking.
One clue can be how quickly the problem appears.
If an area looks dirty again within a day or two of cleaning, I would consider the possibility that you are seeing soil that has wicked back to the surface rather than newly deposited soil.
If the carpet gradually becomes noticeably dirty again over the following weeks, residual soil-attracting material left behind after cleaning becomes another possibility.
This isn’t an absolute rule, but the timing can provide a useful clue.
Why Do Some Areas Get Dirty Faster Than Others?
This is something I have noticed repeatedly throughout my career.
If you look closely at a carpet, you will often find that the most heavily soiled areas aren’t necessarily where you would expect them to be.
Look at the Carpet in Front of a Chair or Sofa
Think about what happens when someone is sitting in a chair.
They stand up and often turn in a particular direction before walking away.
That turning motion can cause the soles of their shoes to rub against the carpet, rather than simply stepping on it.
If there is soil on the bottom of the shoe, that rubbing action can work the soil into the carpet fibers.
This is one reason you may see a particularly noticeable area of soiling directly in front of a favorite chair or sofa.
What About the Carpet in a Bedroom Closet?
I learned an interesting lesson about this years ago when I was called to clean pure-white carpet in a high-end condominium at Rowes Wharf in Boston.
You would expect the entrance area to be the worst because everyone walks through it.
But there was something that caught my attention.
The carpet in the master-bedroom closet was particularly soiled.
Why would a closet, far away from the entrance, have some of the worst soiling?
Think about what can happen in the morning.
Someone takes a shower and gets some water on the bathroom floor. They get dressed, put on their dress shoes and stand in front of the bathroom mirror.
The bottoms of good leather-soled shoes become somewhat porous with use. They can also carry soil and other material picked up during the day.
Now imagine that person steps on a little moisture on the bathroom floor.
The moisture can pick up some of the material from the bottom of the shoe. The person then walks into the closet.
When they turn around in the closet, the soles of their shoes are rubbing against the carpet.
That combination of moisture, soil and the rubbing action of the shoe can produce some surprisingly heavy soiling.
I’ve seen variations of this same situation in many homes over the years.
And there is an easy way to demonstrate just how much material can be on the bottom of a shoe that appears perfectly clean.
Take a clean, wet white cloth and rub it across the bottom of your shoe.
You may be surprised by what you see.
The Carpet Beside the Bed Can Tell Another Story
Another area where I have frequently noticed localized soiling is alongside a bed, particularly where someone regularly gets in and out of bed.
Creams, lotions and body oils can transfer from bare feet onto carpet if they haven’t been completely absorbed into the skin.
Over time, that residue can discolor the carpet and can also create a surface that attracts and holds additional soil.
Again, the location of the soiling can give you a clue about what is happening.
And Then There Is Hairspray
Here is another one that many people probably never think about.
Watch what happens when someone sprays hairspray on their hair in front of a mirror.
Not all of that spray lands on the hair.
A fine mist can settle on the floor and surrounding surfaces.
I’ve actually seen this happen in my own home.
We once had a marble tile floor, and over time the area where my wife regularly applied hairspray became noticeably dull from the residue.
If hairspray residue can build up enough on a hard marble surface to make it look dull, imagine what that same residue can do if it is settling onto carpet.
If you regularly spray hairspray while standing on carpet, some of that product is going onto the carpet fibers. That residue can become another substance that holds onto soil.
This can be particularly noticeable around bathroom mirrors, bedroom mirrors and other areas where personal-care products are regularly used.
The Simplest Way to Keep Carpet Cleaner Longer
After more than 56 years of cleaning carpets, one of the simplest things I recommend is also something I do myself.
Take your shoes off when you come into your home.
When I come home, the first thing I do is take my shoes off. The only carpet or rug I walk on with my shoes is the entrance rug immediately inside my front door.
When I am ready to leave, I put my shoes on just before I walk out the door.
I’ve spent my career seeing what gets deposited onto carpet, and I don’t want to put all of that material into my own carpets.
Taking your shoes off will not eliminate every source of soil, but it can make a tremendous difference in how quickly your carpet becomes soiled and can even help extend the useful life of the carpet.
So, Why Does Your Carpet Get Dirty Again So Quickly?
If your carpet appears dirty again shortly after cleaning, don’t automatically assume that it simply “got dirty again.”
Look at where the problem is occurring and how quickly it appeared.
If it happens within a day or two, wicking may be part of the explanation.
If it gradually happens over the following weeks, the cleaning process and any residue left behind may deserve consideration.
And if the same areas repeatedly become dirty faster than the rest of the carpet, look at what is happening in those areas.
People sitting in chairs and turning.
Shoes being worn inside.
Bare feet carrying lotions and oils.
Hairspray settling around a mirror.
These are all things I have seen contribute to localized carpet soiling over the years.
Sometimes the carpet can tell you the story if you know what to look for.
And after more than 56 years in this business, I’ve learned to pay attention to what the carpet is telling me.
— Alec Houle
Alec’s Carpet & Upholstery Cleaning LLC
55+ Years of Carpet & Upholstery Cleaning Experience