How to Clean Shoes with Fixed Insoles: Simple Tricks

With a few smart techniques, you can save your favourite pairs instead of binning them.

Plenty of people rinse the laces and give the uppers a quick wipe-then wonder why their trainers still smell. The real culprit is usually inside the shoe: insoles that are glued or stitched in place. If you tackle them carelessly with lots of water or harsh products, you can quickly damage the adhesive, cushioning and shape. With a handful of careful steps, however, fixed insoles can be cleaned properly and kept hygienically fresh.

Why fixed insoles are so tricky

Many trainers, running shoes and smarter leather shoes have an insole that’s bonded or sewn to the midsole. It won’t come out without force-which is exactly why cleaning takes a more controlled approach.

Day to day, this area collects sweat, skin flakes and dust. Together they create an ideal breeding ground for bacteria, leading to odour and, in the worst case, athlete’s foot.

“Always clean fixed insoles directly inside the shoe-using as little water as possible, but in a very targeted and controlled way.”

Depending on the model, the footbed may be made from foam, gel padding, memory foam or leather. Some sports brands also use special coatings to help resist bacteria or moisture. All of these materials can react badly to excess damp and aggressive cleaners. If you compromise the structure or the bonding, you risk:

• adhesive loosening and the sole starting to lift
• foam breaking down or crumbling
• the shoe losing its shape
• damaged waterproofing treatments and membranes

Step by step: a gentle deep clean inside

1. Remove dry dirt thoroughly

Before you bring any moisture into the process, get rid of loose debris first-otherwise you’ll just grind dirt deeper into the material.

• Open the shoes fully; loosen the laces or remove them.
• Gently tap the shoes to knock out loose particles.
• Brush the insole with a soft brush (for example, an old toothbrush) or wipe with a cloth.
• Pay close attention to the edges around the toe area and the heel.

This first pass already removes a large proportion of grime and makes the wet clean far more effective.

2. Use a mild cleaning solution correctly

For the main clean, a gentle mix of lukewarm water and a small amount of washing-up liquid-or a dedicated shoe cleaner-is usually sufficient.

“The insole must never be soaked. Your cloth should be damp, not dripping.”

Do it like this:

• Mix lukewarm water with a few drops of a mild cleaner in a bowl.
• Dip in a microfibre cloth or soft sponge, then wring it out very well.
• Wipe the insole using small circular motions, working a bit more firmly on heavily soiled patches.
• Use a second cloth dampened with clean water only to lift away any remaining cleaner.
• Finally, blot the surface carefully with kitchen roll or a dry cloth.

If the inside of your shoes includes delicate materials such as leather, choose a leather cleaner or specialist product instead of washing-up liquid, and follow the manufacturer’s guidance.

Home remedies for strong odours and stains

If a mild soapy solution isn’t enough, there are a few straightforward household options many people already have at home.

Cleaner	Best for	How to use	Typical drying time
Gentle soapy solution	General dirt	Work in with a damp cloth	24–48 hours
Bicarbonate of soda or baking powder paste	Stubborn stains, strong odour	Apply, leave to work, brush off	12–24 hours
Alcohol–water mix	Reducing germs	Spread lightly with a cloth or a light spray	6–12 hours
Diluted white vinegar	Neutralising odours	Fine mist, do not soak	12–24 hours

Bicarbonate paste for stains and mustiness

Bicarbonate of soda (or baking powder made with bicarbonate) is mildly abrasive and helps neutralise smells.

• Stir 1–2 spoonfuls of bicarbonate of soda into a little water to form a thick paste.
• Apply only to stained areas or spots with the strongest odour.
• Leave it for about 15 minutes.
• Gently rub off with a slightly damp cloth or a soft brush.
• Wipe again with a dry cloth and allow to dry thoroughly.

Alcohol and vinegar for hygiene and odour control

A mixture of alcohol (for example, isopropyl alcohol) and water helps reduce germs-useful after sport or if you sweat heavily. Diluted white vinegar is particularly helpful for tackling odours.

Important: only apply as a light spray or dab on with a cloth-never pour liquid into the shoe. Overdoing it can damage materials and dramatically extend drying time.

Drying properly: the step that matters most

Even the best cleaner won’t help if the shoes stay damp inside for days afterwards. Moisture encourages mould, ages adhesives and brings odour straight back.

“Direct heat is off limits: no radiators, no hairdryer, no oven. Your shoes will last longer if you avoid it.”

Instead:

• Leave shoes at room temperature in a well-ventilated spot.
• Undo the laces and pull the tongue forward as far as possible.
• Loosely stuff with newspaper or kitchen roll, replacing it every few hours.
• Optionally use a fan or dehumidifier to speed things up.

In a damp home, drying can take 48 hours. Before wearing them again, check the toe area by hand: if the material still feels cool and slightly clammy, the shoe needs more time.

How to keep shoes fresh between deep cleans

If you wait until your trainers smell strong, you’ll always be chasing the problem. It’s more effective to intervene early and make a couple of small changes to your routine.

Airing out and managing moisture

After wearing them, shoes shouldn’t go straight into a cupboard. Better options include:

• leaving them open in the room for a few hours, ideally somewhere with good airflow
• absorbing moisture with cedar shoe trees or cedar inserts
• not stacking shoes on top of each other so air can circulate

This simple habit significantly slows bacterial growth and extends the time between intensive cleans.

Using powders and sprays the right way

Odour-neutralising powders and shoe sprays now come in many forms, from chemist options to natural blends with tea tree or eucalyptus oil.

Keep in mind:

• Apply only to dry insoles.
• Use sparingly to avoid creating a sticky build-up.
• If you have sensitive skin, opt for fragrance-free or gentle, naturally based products.

If you’d rather not buy anything, you can occasionally sprinkle a little bicarbonate of soda into dry shoes, leave it overnight, then knock it out thoroughly or vacuum it the next day.

Rotate your shoes instead of wearing one pair nonstop

A surprisingly effective trick: don’t wear the same pair every day. Rotating between two or three pairs gives each insole time to dry out fully. That reduces odour, protects the materials and saves money over time because the shoes last longer.

When it’s time for new shoes or insoles

Some issues won’t disappear even with careful care. If the cushioning noticeably weakens, the insole compresses, or the smell returns quickly after every clean, treat it as a warning sign.

Especially with sports footwear, a worn fixed insole can increase strain on joints and tendons. It’s worth taking an honest look: are the tread, upper and footbed still in a condition that properly supports your feet? If not, replacement is the only sensible option.

If the shoes are otherwise in good shape but hygiene is the main concern, a podiatrist or cobbler may, in some cases, be able to adjust, add padding or retrofit a solution. Whether that’s possible depends heavily on how the shoe is constructed and is best discussed with a specialist.

Background: why insoles smell in the first place

Odour isn’t caused by sweat alone-it comes from bacteria breaking sweat down. The warmer and more humid the inside of the shoe, the faster bacteria multiply. Synthetic materials often intensify the issue because they let less moisture escape.

If you exercise frequently, wear safety boots for long shifts or spend a lot of time standing at work, it helps to address foot care alongside shoe care: wash regularly, dry thoroughly, and, if needed, use targeted products for heavy sweating. Cleaner feet reduce the burden on the insole significantly-and mean you’ll need a deep clean far less often.

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