My Neighbour’s Sliding Doors Looked Professionally Cleaned.

Turns Out She Hasn’t Hired a Window Cleaner in Over a Year.

Sponsored Content | Claire Ashworth | Updated 10/04/2026 | 5-min read

I've got fourteen glass panels in my home. Six sliding doors across the back, two in the living room, four windows across the front and a set of bi-folds that open onto the deck. When we designed the house, I was obsessed with getting as much natural light as possible.

 

Nobody warned me about the cleaning.

For the first year, I tried to stay on top of it myself. Windex and paper towels on the inside. A squeegee and bucket on the outside. By the time I finished the last panel, the first one already had new fingerprints from the kids or nose prints from the dog.

 

I gave up and started paying a window cleaner. Two hundred and eighty dollars every eight weeks. He'd come, spend about ninety minutes and the glass would look incredible for maybe a week before the film started building up again.

 

Six visits a year. Nearly seventeen hundred dollars. And I still wasn't happy with how the glass looked between visits.

Then one afternoon I was at my neighbour Leanne's place for a coffee. She's got a similar setup — big sliding doors out to the pool area, lots of glass.

 

Her glass was spotless. Not "pretty good" spotless. Genuinely flawless. I could see straight through to the pool fence like the glass wasn't even there.

 

I asked her when she'd had her windows done. She looked at me blankly for a second and then said she hadn't hired a window cleaner since the year before.

 

I thought she was joking.

 

She went to the laundry, came back with a dark grey cloth and told me she just wipes the glass down once a week with this and water.

 

That's it. No spray. No bucket. No squeegee.

 

Takes her about fifteen minutes to do the entire house. The cloth was called KoalaCloth. I'd never heard of it.

 

She explained something that genuinely changed how I think about cleaning glass.

 

Every window spray — Windex, supermarket brands, the "streak-free" ones, all of them — leaves a thin chemical film on the glass after you wipe. You can't see it immediately.

 

The glass looks clean in the moment. But the second afternoon sun hits at an angle, that invisible film lights up every smear, every wipe mark, every overlap where you changed direction.

 

That's why your windows look clean at 9am and terrible at 3pm. 

 

It's not the glass. It's not your technique. It's the spray leaving residue that only shows up in certain light.

 

I'd been doing this for years. Spraying, wiping, checking, seeing streaks, spraying again. The spray was causing the exact problem I was trying to fix.

 

The cloth Leanne showed me uses only water. No chemicals, no spray, no film. The fibres are dense enough to physically lift grime off the glass rather than smearing it sideways. When the surface dries, there's nothing left on it. 

 

No residue. No film. Nothing to catch the light.

 

That's why her glass looked like it wasn't there. Because there was genuinely nothing on it.

I borrowed one of her cloths and went home to test it. I started on the worst panel in the house — the sliding door the kids use to get to the backyard. 

 

Fingerprints at every height, dog nose smears across the bottom, a layer of dust and grime that had built up since the window cleaner's last visit three weeks earlier.

 

I dampened the cloth under the tap, wrung it out and wiped the panel from top to bottom. 

 

Two passes. Maybe twenty seconds.

 

I stepped back and genuinely had to look twice. The glass was perfectly clear. Not "pretty good." Not "better than before." Clear like a freshly installed pane.

 

I walked outside and checked it from the other direction, because every time I'd cleaned windows before, they'd look fine from one side and terrible from the other. This time, perfect from both sides.

 

Then I waited. I waited for the afternoon sun to come through, because that's always when the streaks appear. The light hit the glass at about 3pm. I stood there watching, expecting to see the familiar haze.

 

Nothing. Just clean glass and a clear view of the garden.

 

That was the moment I cancelled my window cleaner.

 

I did some reading afterward because I wanted to understand why this cloth felt so different from every microfibre cloth I'd tried before.

 

It comes down to something called GSM — grams per square metre. It's how you measure fibre density. The microfibre cloths you buy at the supermarket or from Kmart sit around 200 to 300 GSM. At that density, the fibres can't actually grip the microscopic particles that build up on glass.

 

They push them sideways, which is why you get streaks and lint.

 

The cloth Leanne gave me is 600 GSM. Three times denser. The fibres are fine enough and packed tightly enough that they physically lift dirt, grease, water and mineral deposits off the surface in one pass. It's a mechanical action, not a chemical one. Which is why it doesn't need spray.

 

The other thing I noticed is the size. It's 60 by 40 centimetres, which is roughly double the size of a standard cleaning cloth. That matters more than you'd think on large glass.

 

With a normal-sized cloth, you're making five or six overlapping passes across a full sliding door panel and every overlap is a new chance to streak. With a cloth this size, you cover the panel in two passes.

 

No overlaps. No joins. No going back.

 

Since that first test, I've done every window and glass door in the house. All fourteen panels. It took me about twenty minutes, which is less time than the window cleaner used to spend and the result is honestly better.

 

What surprised me most wasn't the glass, though. It was how the whole routine around windows changed.

I used to dread it. It was a half-day job that I'd put off for weeks. Now I do a quick wipe of the sliding doors once a week while the kettle boils. It takes maybe three minutes. The glass never gets a chance to build up that hazy film because I'm maintaining it with just water and the cloth.

 

My husband, who has never voluntarily cleaned a window in his life, now wipes the back doors down after the dog puts his face on them. I didn't ask him to. 

 

He just does it, because it takes thirty seconds and the cloth makes it obvious how to get a perfect result without any fuss.

 

The window cleaner's seventeen hundred dollars a year is now sitting in our holiday fund. 

 

The spray bottles under the sink are gone. 

 

The paper towels I used to burn through are gone. I have one cloth at the back door and one at the front. That's the entire window cleaning operation for a fourteen-panel home.

I'm not going to pretend a cloth is life-changing. It's a cloth. But it's solved a problem I'd been throwing time and money at for years and the difference between this and everything else I've tried is immediately obvious the first time you use it.

 

If you've got sliding doors, bi-folds, or any amount of glass in your home and you're still going back over the same panels checking for streaks in different light — you're probably in the same cycle I was.

 

Spray, wipe, check, repeat.

 

It's the spray. Get rid of the spray. That's the whole lesson I wish someone had told me three years and five thousand dollars in window cleaner fees ago.

 

The cloth I use is the KoalaCloth XXL.

 

Leanne bought hers from their website and I did the same. They've got a 60-day trial — if it doesn't pass your sunlight test, you can send it back.

See the KoalaCloth XXL for windows and glass doors here
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