You unload the dishwasher, hold a wine glass up to the light, and there it is: a milky haze that makes clean glassware look anything but. Cloudy glasses have exactly three causes — and the fix depends entirely on which one you've got. Here's how to tell them apart in under a minute.
The 60-second vinegar test
Dampen a cloth with white vinegar and wipe one cloudy glass. Let it dry.
- The wiped patch comes up clear? You have mineral or detergent film — completely fixable, keep reading.
- Still cloudy? That's etching: microscopic pitting of the glass itself. We'll be honest with you below — that one can't be undone.
Culprit 1: hard-water minerals
When mineral-rich water evaporates in a hot dishwasher, the minerals stay behind as a white film. Whether this is your problem depends a lot on where you live: Adelaide, Perth and parts of regional Queensland have some of Australia's hardest water, while Sydney, Melbourne and Hobart are mostly soft.
The fix: soak affected glasses in warm white vinegar for 15 minutes, then rinse — the haze dissolves. To stop it coming back, keep rinse aid topped up, top up the salt reservoir if your machine has one, and run the occasional empty hot cycle with vinegar to clear the machine itself.
Culprit 2: detergent residue — and tablets that don't fully dissolve
The film isn't always minerals; often it's detergent. Two ways it happens:
- Overdosing. In soft-water cities especially, a full heavy dose for a light load leaves surplus detergent that redeposits on glass as a chalky film.
- Tablets and pods that don't dissolve completely. Short cycles, cooler eco settings or a crowded dispenser can leave a tablet half-dissolved — the gritty remains end up on your glassware (or sitting in the bottom of the machine).
This is where a dissolvable sheet quietly outperforms the tablet tub. A DSSLV dishwasher sheet is thin and pre-measured, designed to dissolve completely in the wash — no half-dissolved tablet or wrapper left behind to sit on the glass. And because it's a sheet, you can actually dose to the load: half a sheet for a light load, one for a standard load, two for heavily soiled or large loads. A 40-sheet pack covers up to 80 loads — from around 32 cents a load in multi-packs — with a crisp lemon finish and no plastic tub on the bench.
Culprit 3: etching (the honest part)
Etching is permanent, microscopic pitting caused by the combination of very soft water, too much detergent and high heat — the glass surface itself is slowly worn away. The vinegar test tells you if you're here: no amount of soaking will clear an etched glass.
You can't reverse it, but you can stop it getting worse and protect new glassware: dose down for your water (soft-water households genuinely need less detergent — another argument for the half-sheet option), skip pre-rinsing (scrape plates instead — detergent with nothing to work on attacks glass surfaces), and use a gentler or shorter cycle for delicate stemware.
Five habits for permanently clear glassware
- Dose to the load — half sheet light, one standard, two heavy.
- Angle glasses on the rack so water drains rather than pooling on the base.
- Don't nest or overcrowd — glasses that touch trap wash water and spot.
- Clean the filter monthly and run a hot vinegar cycle through the empty machine.
- Unload the bottom rack first, so drips from cups up top don't land on dry glasses below.
Cloudy glasses are usually the machine's way of telling you the dose is wrong — not that you need a harsher detergent. Fix the dose, and the shine comes back on its own. If you're switching the kitchen over, the dishwasher sheets range is the easy start — or grab the Complete Home Bundle and cover the laundry and surfaces too, with free shipping and our 30-day guarantee. For the bigger picture on going plastic-free room by room, start here.