Quick Answer
A full dishwasher clean takes about 30–45 minutes and costs almost nothing — white vinegar, bicarb soda, and a cloth are the only supplies needed. Clean the filter monthly and run a deep clean every 1–3 months to prevent odours, poor cleaning results, and costly repairs.
Why Your Dishwasher Smells (and Stops Cleaning Properly)
Most Melbourne households run the dishwasher daily, but few clean it more than once a year — if at all. Food debris, grease, limescale from our moderately hard mains water, and detergent buildup clog filters, coat spray arm holes, and line the door seal. The result: cloudy glasses, gritty residue on plates, and that unmistakable smell every time you open the door.
The good news: a thorough clean takes under an hour and requires no special products.
What You’ll Need
| Supply | Cost | Where to Buy |
|---|---|---|
| White vinegar (2 cups) | ~$2–3 | Supermarket |
| Bicarb soda (1/2 cup) | ~$1–2 | Supermarket |
| Old toothbrush or small brush | $0–3 | Supermarket / chemist |
| Microfibre cloth | $2–5 | Supermarket / hardware |
| Commercial dishwasher cleaner (optional) | $5–12 | Supermarket |
Step-by-Step: Deep Clean Your Dishwasher
Step 1: Remove and Clean the Filter
Twist out the cylindrical mesh filter from the base of the dishwasher (consult your manual if you can’t find it — it’s under the lower rack). Rinse it under hot running water, scrubbing away trapped food with an old toothbrush and a drop of dish soap. Soak stubborn grease in hot soapy water for 10 minutes. Rinse until the water runs clear, then re-seat and lock the filter back in place.
Step 2: Clear the Spray Arms
Remove both spray arms (usually a simple anticlockwise twist or clip release). Hold each arm up to the light and check every spray hole for blocked debris. Use a toothpick or bamboo skewer — not metal — to poke through any clogged holes. Rinse under running water, then refit both arms.
Step 3: Wipe the Door Seal and Interior Edges
The rubber door gasket is a magnet for mould, mildew, and food debris — especially around the bottom and corners. Dampen a microfibre cloth with a solution of equal parts white vinegar and water. Work your way around the full seal, getting into the folds. Wipe down the door interior, control panel surround, and the inside edges of the door. Dry with a clean cloth.
Step 4: Run a Hot Vinegar Cycle
Place a dishwasher-safe bowl or cup filled with 2 cups of white vinegar on the top rack. Run the hottest, longest cycle your machine offers with no detergent and no dishes. The vinegar loosens limescale, cuts grease, and kills odour-causing bacteria throughout the interior.
Step 5: Follow Up with a Bicarb Cycle
After the vinegar cycle finishes, sprinkle half a cup of bicarb soda across the base of the dishwasher floor. Run a short, hot rinse cycle. Bicarb neutralises any remaining vinegar smell, absorbs odours, and brightens the stainless steel interior.
Step 6: Clean the Exterior and Detergent Dispensers
Wipe down the outside of the door, the control panel, and the handle with a damp cloth. Check the detergent dispenser drawer for hardened old detergent — remove it with a wet toothbrush. If your machine has a rinse aid dispenser, top it up. A clogged dispenser causes the door to stick open mid-cycle and under-doses detergent.
Troubleshooting Table
| Problem | Likely Cause | Fix |
|---|---|---|
| Dishes still gritty after cleaning | Blocked filter or spray arms | Clean filter and clear spray arm holes |
| Glasses come out cloudy | Hard water / low rinse aid | Top up rinse aid, run vinegar cycle, check water hardness |
| Dishwasher smells bad | Food in filter or door seal mould | Clean filter, scrub door seal, run vinegar + bicarb cycle |
| Dishwasher not draining | Blocked filter or kinked drain hose | Clean filter; check drain hose under sink for kinks or blockage |
| Detergent door doesn’t open | Clogged dispenser / blocked lower rack | Clean dispenser, reposition tall items away from dispenser door |
How Often Should You Clean Your Dishwasher?
| Task | Frequency | Time |
|---|---|---|
| Rinse and clean filter | Monthly | 5 min |
| Clear spray arm holes | Every 2–3 months | 10 min |
| Full deep clean (vinegar + bicarb cycle) | Every 3 months | 45 min |
| Wipe door seal and interior | Monthly | 5 min |
When to Call a Professional
Regular cleaning fixes most dishwasher problems, but call a licensed appliance repairer if you notice water pooling under the machine, the door seal is cracked or torn, the machine is making grinding or screeching sounds, or error codes persist after cleaning. A service call for most brands costs $100–180 in Melbourne. Parts and repairs typically add $80–250 depending on the fault.
Tips and Gotchas
- Never mix vinegar and commercial dishwasher cleaner in the same cycle — the acid can degrade some commercial product ingredients.
- Use the right detergent dose — overfilling the dispenser leaves residue; underfilling leaves dishes dirty. Check your machine’s manual for the recommended amount.
- Hard water areas need more frequent limescale treatment. Berwick, Pakenham, and Cranbourne have moderately hard tap water — consider a monthly vinegar rinse rather than quarterly.
- Don’t overload the racks. Crowded dishes block spray arm rotation, which is the most common cause of poor cleaning results.
- Scrape, don’t pre-rinse. Modern dishwashers work better with light food residue on dishes — it helps the sensor calibrate the wash cycle. Completely clean dishes fool the sensor into using less water.
- Run on a full load to save energy. A standard dishwasher uses 10–15 litres per cycle — more efficient than hand washing if run full.
- Check the door hinge springs if the door doesn’t stay open at 45 degrees — worn springs are a common issue on 5–8 year-old Bosch, Fisher & Paykel, and Ariston models.
- Avoid dishwasher tablets in very old machines (pre-2010) — the concentrated enzymes in modern tablets can corrode older rubber seals.
Local Resources
- Dishwasher cleaning products at Bunnings
- Bosch dishwasher support and manuals — Appliances Online
- Appliance Services Melbourne — local repair technicians
- Consumer Affairs Victoria — appliance safety
FAQ
How often should I clean my dishwasher filter?
Clean the filter once a month if you run your dishwasher daily. It takes 5 minutes and prevents most cleaning problems. If you’re already noticing gritty dishes or poor drainage, clean it immediately — it’s likely the cause.
Can I use bleach to clean my dishwasher?
No — avoid bleach in dishwashers with stainless steel interiors or rubber door seals. Bleach corrodes stainless steel over time and degrades rubber gaskets. White vinegar and bicarb soda are safe and highly effective alternatives.
Why do my glasses come out cloudy even after cleaning the dishwasher?
Cloudy glasses are usually caused by hard water mineral deposits (limescale). Top up your rinse aid dispenser, run a vinegar cycle, and consider using a rinse aid booster product. If cloudiness persists, the etching may be permanent — this happens when delicate glasses are washed on high-heat cycles repeatedly.
My dishwasher smells after cleaning — what else can I try?
Check the door seal folds thoroughly — mould often hides in the bottom section. Also check the interior base for standing water, which points to a partial drain blockage. Clean the filter, run a hot vinegar cycle, then leave the door slightly ajar overnight to let moisture escape.
Is it worth repairing a dishwasher or better to replace it?
If repair costs exceed 50% of the replacement price, or the machine is over 8–10 years old, replacing is usually better value. A basic entry-level dishwasher costs $600–900 at Harvey Norman or Appliances Online. Repair calls in Melbourne typically run $100–180 for a diagnostic, plus parts.
Final Thoughts
A dishwasher that smells or leaves residue on dishes almost always has a dirty filter. That’s the starting point for 80% of dishwasher complaints, and it costs nothing to fix. Add a monthly 5-minute filter rinse to your kitchen routine and you’ll rarely need a full deep clean. When you do need one, white vinegar and bicarb soda are all you need — no expensive specialist products required.
