How I Finally Stopped Dreading the Car Trip Home After Footy (And Why Everything I'd Tried For 3 Seasons Was Making the Smell Worse)

She started at the beginning.

During a footy training session, feet produce between 250ml and 500ml of sweat. That's a significant amount of moisture — and it doesn't just sit on the surface of the skin.

It gets absorbed directly into the foam midsole, the compressed insole, and the layered fabric lining of the boot. The foam construction that makes modern footy boots so comfortable and protective? It's also extraordinarily good at holding moisture.

Once that moisture is in there, it meets three things: warmth, darkness, and zero airflow.

That's a perfect environment for bacteria. They settle into the foam, feed on the sweat proteins, and multiply. The smell isn't the sweat itself — it's the waste those bacteria produce as they break down the proteins.

The clinical term is bromodosis — and it is a bacterial activity problem, not a cleanliness one. It doesn't matter how often your son showers. The bacteria are in the boot, not on his skin.

"The critical thing to understand," she said, "is where exactly the bacteria are living. They're not sitting on the insole surface where you can reach them with a spray. They're embedded in the foam layers underneath — layers that no surface treatment can penetrate."

This is why the smell keeps coming back no matter what goes on the surface of the boot. The source of the problem is inside the foam. Until the moisture is removed from the foam itself, the bacteria have everything they need to keep producing the smell.

Everything You've Tried Is Not Working!

I told her about my routine. Baking soda in a sock, left overnight. Glen 20 sprayed inside after training. Occasionally running them through the washing machine when it got really bad.

She wasn't surprised. She'd heard it all before.

"Baking soda is a powder," she explained. "It sits on the surface of the insole and absorbs whatever moisture is right there at the top. But the foam core — where the bacteria actually live — is completely unreachable. It's like trying to dry out a sponge by dabbing the top of it."

The spray is the same story. It coats the surface and masks the smell with fragrance for a few hours. But the bacteria underneath aren't affected. They keep multiplying. And when the fragrance fades — usually within hours — the smell comes straight back.

You're not solving the problem. You're just covering it up temporarily.

As the podiatrist explained it to me…

It's like having a leak in your roof, and instead of fixing the leak, you just put a bucket under it and empty the bucket every day. The problem is still there. You're just managing the symptom.

The real underlying problem — moisture deep inside the foam — is completely untouched.

And every spray you use, every sock of baking soda, every time you leave them outside to air… you're just emptying the bucket.

Then I mentioned the washing machine.

She actually winced.

"That's one of the worst things you can do to a footy boot."

When you put footy boots in the washing machine, you're saturating the foam core with water. Not rinsing it — saturating it. And foam doesn't dry in a few hours on the laundry line. It can take 24 to 48 hours for the foam core to fully dry.

If your son puts them on before that happens — for school, training, the game on Saturday — the bacteria that were already living in there now have more moisture than ever. They double. Then double again. You've just fed the bacteria the perfect meal.

That's why the boots smelled worse after washing. You weren't imagining it. You were making the problem significantly bigger.

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I looked at her, confused.

She smiled.

"Think about it this way. The bacteria are still actively producing the smell — which means the moisture that feeds them is still there, still removable. The problem hasn't become permanent yet."

She explained that boots which have been left untreated for too long — years of moisture and bacteria building up — can eventually reach a point where the foam itself is permanently compromised. The smell becomes structural.

But most footy boots haven't reached that point. The smell is still caused by active bacteria feeding on active moisture. Which means if you remove the moisture, you stop the smell. Not temporarily. For good.

So I asked the obvious question.

What is the right one?