# How to Clean a Dishwasher: Filter, Seal, and Limescale > A practical guide to cleaning a dishwasher: rinsing the filter and spray arm, wiping the door seal, dissolving limescale with vinegar, and a simple monthly maintenance routine. Canonical: https://mizaanhome.com/en-eg/blog/how-to-clean-a-dishwasher/ Last updated: 2026-07-30 --- To clean a dishwasher properly: pull out the bottom filter and rinse it under running water every one to two weeks, wipe the rubber door seal clean of food residue and grease, and run an empty cycle with a cup of white vinegar on the hottest setting once a month to dissolve limescale and keep wash performance up. The step most people skip is the filter, and it is the number one cause of dishes coming out less clean than expected and the smell that shows up over time. ## The quick answer **Rinse the dishwasher filter every one to two weeks under running water, and wipe the rubber door seal clean of grease and residue weekly.** Run an empty cycle with a cup of white vinegar on the hottest setting once a month to dissolve limescale and built-up soap residue, and sprinkle baking soda in the base first if deposits are stubborn. Dedicated cleaning tablets are a useful add-on afterward, not a substitute for the filter. ## Key points - **The bottom filter is where food debris and grease build up the most**, and skipping it regularly reduces spray efficiency and brings back odors ([how a dishwasher works, from Britannica](https://www.britannica.com/technology/home-appliance)). - **The rubber door seal traps standing water and soap residue**, so it needs a weekly wipe with a cloth so it doesn't become a source of smell or mold. - **Limescale builds up on the spray arm and heating element in hard water areas**, reducing spray pressure and wash efficiency over time ([background on limescale, from USGS](https://www.usgs.gov/water-science-school/science/hardness-water)). - **A monthly vinegar cycle dissolves limescale and soap buildup** without needing harsh chemicals. - **Dedicated dishwasher cleaner tablets help between cycles**, but they're an add-on, not a replacement for cleaning the filter by hand. ## Why does a dishwasher need regular cleaning? A dishwasher works on a rotating spray system: hot water mixed with detergent sprays from an arm above and below the racks, and food debris drops into a bottom filter that traps larger particles before they can recirculate. That filter doesn't self-clean in most models, so if you leave it too long, the buildup reduces spray efficiency and starts producing odor, and sometimes dishes come out of a finished cycle with small bits of residue still on them. ## Weekly cleaning steps: filter and spray arm 1. **Unplug the dishwasher** before doing any manual cleaning inside the tub. 2. **Remove the bottom filter** (usually a quarter turn counterclockwise) and rinse it under running water with a soft brush to clear trapped food from the mesh. 3. **Check the spray arm** and make sure the small holes aren't clogged with residue or limescale; use a toothpick to gently clear any blocked hole. 4. **Wipe the rubber door seal** with a damp cloth, focusing on the lower fold where standing water collects. 5. **Reinstall the filter** and make sure it's seated properly before running another wash cycle. ## Limescale and smell: vinegar and baking soda If your water is hard or the dishwasher hasn't had a deep clean in a while, place a cup of white vinegar in a dishwasher-safe bowl on the top rack and run an empty cycle on the hottest setting. The vinegar dissolves limescale buildup on the spray arm and heating element and clears out old soap smells. For stubborn stains or buildup at the bottom, sprinkle a little baking soda in the base before running a short, hot cycle again. Once a month or every couple of months is enough, and it's a cheaper alternative to any off-the-shelf cleaning product. ## Do and don't when cleaning a dishwasher | Situation | Do | Don't | |---|---|---| | Bottom filter | Remove and rinse under running water weekly | Leave it unchecked for months | | Rubber door seal | Wipe with a cloth weekly | Leave it wet with standing water | | Limescale | Empty vinegar cycle monthly | Strong bleach or abrasives on the interior tub | | Stubborn stains | Baking soda in the base | Steel wool or a metal tool | | Between cycles | Dishwasher cleaner tablets as an add-on | Relying on them instead of cleaning the filter | ## Cleaning tablets: a useful add-on, not a substitute Once you've handled the filter, door seal, and monthly vinegar cycle, dedicated dishwasher cleaner tablets or powders can be a useful add-on between deep cleans, especially in hard water areas or if you want an easier routine than measuring vinegar yourself. They complement hand cleaning rather than replace it, since the filter still needs to be cleaned by hand regularly no matter what off-the-shelf product you use. ## The dishwasher that's easy to maintain If you're still shopping and want a model whose daily upkeep won't eat into your time, the **Beko 45cm 10-Place**'s filter and spray arm are easy to reach and clean, it has an LED display showing cycle status, and it's the cheapest full-size model on our shortlist with dozens of buyer reviews behind it. We didn't pick it just for being easy to maintain, but that's a real factor in the recommendation, which is why it tops our [guide to the best dishwasher in Egypt](/en-eg/best/best-dishwasher/). Its current price and buy link are in the card below. ## Bottom line Cleaning a dishwasher isn't complicated: a weekly filter rinse, a clean door seal, and a monthly vinegar cycle keep it running well for years. If the smell keeps coming back despite all this, the problem usually runs deeper than routine cleaning, read [why a dishwasher smells bad and how to fix it](/en-eg/blog/dishwasher-smells-bad-how-to-fix/). If you're still choosing the right detergent, see [best dishwasher detergent](/en-eg/blog/best-dishwasher-detergent/). If you're still at the buying stage, read [best dishwasher to buy in Egypt](/en-eg/blog/best-dishwasher-in-egypt/) or our [how to choose a dishwasher](/en-eg/guides/how-to-choose-a-dishwasher/) guide, and to browse all the options see [dishwashers in Egypt](/en-eg/dishwashers/). ## Sources - Britannica, "Home appliance (dishwashers)", how a dishwasher works, its filter, and spray arm mechanism: https://www.britannica.com/technology/home-appliance - USGS, "Hardness of water", background on limescale and why it builds up in household appliances: https://www.usgs.gov/water-science-school/science/hardness-water ## Where to buy - [Finish Ultimate Infinity Shine Dishwasher Tablets, LEMON, 100 Dishwasher Ta](https://www.amazon.eg/dp/B09QXMZHV8/ref=nosim) - [Beko 45cm 5-Program 10-Place Dishwasher (LED)](https://www.amazon.eg/dp/B0BR2NDSV4/ref=nosim) --- > منهجية ميزان هوم: نعتمد على المواصفات الرسمية وإجماع تقييمات المشترين والأسعار المحلية، ولا نختبر المنتجات بأنفسنا (بلا ادعاء تجربة شخصية، وبلا تقييمات Review/AggregateRating من تأليفنا). الأسعار تقريبية ووقت النشر، وقد يحتوي الدليل على روابط تابعة. > > Mizaan Home method: we rely on official specifications, the consensus of buyer reviews, and local prices. We do not test products ourselves (no firsthand-testing claims, no self-authored Review/AggregateRating). Prices are approximate and correct at publication; this guide may contain affiliate links.