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How to Clean a Dishwasher: Step by Step Guide for UK Homes

eco dishwasher greentab being placed into dishwasher to help clean dishwasher

A dishwasher should make life a little bit easier, but it needs regular cleaning to work well. When food debris, grease and limescale build up, you may notice smells or dishes that do not look clean. Hard water can also leave deposits inside the machine, which is common in many UK homes. The good news is that learning how to clean a dishwasher is simple.

This guide shows you how to clean each part step by step using clear, eco friendly methods. You will learn how to clean the filter, spray arms, seals and interior, and how to run a deep cleaning cycle with natural ingredients. A troubleshooting section and maintenance schedule will help you keep your dishwasher running smoothly in the long term.

Why Cleaning Your Dishwasher Matters  

A clean dishwasher works better and uses less energy. When filters, spray arms and seals stay free of debris, water can move through the machine without blockages. This helps dishes come out cleaner and reduces the need to rewash items.

Regular cleaning also prevents smells. Food particles and grease builds up over time and can cause unpleasant odours. Limescale is another common issue in UK homes, and it can reduce the efficiency of spray arms and heating elements. Cleaning your dishwasher helps slow this build-up and keeps your machine performing at its best.

A well maintained dishwasher lasts longer. Removing debris protects the filter and pump. Keeping seals clean helps prevent leaks and mould. A few simple steps each month can save you money on repairs and help your dishwasher run more efficiently.

What You Need Before You Start  

Gather a few simple items before you begin. Having everything ready makes the cleaning process quick and stress free.

You will need:

A cellulose dish cloth

• A small brush or old toothbrush

• A bowl or cup

• Baking soda

• Distilled white vinegar

A non toxic dishwasher tablet

An eco cleaning spray

These items help you remove debris, clean seals and edges. They will freshen the interior and tackle grease and limescale without harsh chemicals.

How to Clean a Dishwasher Step by Step  

Follow these simple steps to give your dishwasher a thorough clean. Each step helps remove grease, limescale and food debris so your machine runs more efficiently.

Step 1. Empty the Dishwasher and Clear the Filter  

Remove all dishes and take out the bottom rack to access the filter. Lift out the filter if your model allows it. Use your brush to clear any food or debris. Rinse the filter under warm water to remove grease and trapped particles. If your filter is fixed, wipe the area around it and remove any obstructions by hand. Keeping the filter clear helps prevent smells and improves cleaning performance.

Step 2. Remove and Clean the Spray Arms  

Remove the spray arms if your dishwasher design allows it. Most will twist or lift off. Rinse them under warm water to clear grease and loosen any trapped debris. Use a small brush or a toothpick to gently clear any blocked holes. These holes control the water flow, so keeping them clear helps dishes come out cleaner. Once the spray arms look clear, set them aside to dry

Step 3. Clean the Door Seal, Edges and Crevices  

multipurpose greentabs bottle ready to clean a dishwasher

Wipe along the door seal and the edges of the dishwasher with your cellulose dish cloth and eco cleaning products. These areas collect grease, soap residue and food particles that water cannot reach during a cycle. Multipurpose Spray GreenTabs™ works well here as they are non-toxic and safe for rubber seals. Spray it onto the cloth or directly onto the seal. Use a small brush to clean inside any tight corners or crevices. Keeping the seal clean helps prevent smells and protects the rubber so it lasts longer.

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Step 4. Run a Vinegar Cleaning Cycle  

Place a dishwasher safe cup or bowl filled with distilled white vinegar on the top rack. Run the shortest hot cycle your dishwasher offers. Vinegar helps break down grease, limescale and residue without harsh chemicals. This simple step is often enough to refresh the whole interior. After the cycle, leave the door open for a few minutes to let the dishwasher dry.

Step 5. Deodorise With Baking Soda (Only If Needed)  

If smells remain after the vinegar cycle, sprinkle a light layer of baking soda across the base of the dishwasher. Run a very short, warm cycle. Baking soda absorbs odours and brightens the interior. Use this step only when you need it to avoid unnecessary energy and water use.

Step 6. Clean and Polish the Exterior  

Wipe the outside of the dishwasher with your cellulose cloth and an eco friendly cleaning spray. Focus on the handle, buttons and edges, as these areas collect fingerprints and grease. For stainless steel doors, wipe in the direction of the grain to avoid streaks. Keeping the exterior clean helps your dishwasher look fresh and prevents dirt from building up around the controls.

Step 7: Your Dishwasher Is Now Ready to Run a Fresh Cycle  

dishwasher greentabs sample pack with clean dishes on countertop

Once your dishwasher is clean, it is ready for a normal wash. Fill the machine as usual and use a gentle, non toxic dishwasher detergent. This helps clear away any remaining cleaning ingredients and prepares the machine for everyday use.

Natural dishwasher tablets are a great option for every day use. Dishwasher GreenTabs™ include built in salt and rinse aid, which helps your dishes come out clean and streak free. Using an eco friendly detergent also supports long term dishwasher performance by reducing grease, residue and limescale.

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How Often Should You Clean Your Dishwasher  

A simple routine helps keep your dishwasher running well and prevents bad smells, cloudy dishes and limescale buildup. You do not need to deep clean often, but staying consistent makes a big difference.

• After each cycle: Remove any visible food debris from the filter area.

• Weekly: Wipe the door seal, edges and controls with an eco friendly cleaning spray.

• Monthly: Run a vinegar cycle for a deeper clean.

• Every 3 months: Clean the filter, spray arms and seals for a full deep clean.

Homes in hard water areas may need to clean the machine a little more often. Limescale builds up faster and can affect spray arm performance and drying results.

Troubleshooting, Common Dishwasher Problems and Fixes  

Sometimes a quick clean is not enough to solve every issue. These common problems are easy to fix with a few simple checks.

My dishwasher smells bad  

Smells usually come from trapped food, grease or stagnant water. Clean the filter, wipe the seal and run a short vinegar cycle. Baking soda can also help if the smell is strong. Using an eco friendly detergent in your next wash helps keep odours away.

My dishes aren’t coming out clean  

This often happens when there is a block in spray arms or the filter. Clean both and check that nothing is stopping the arms from turning. Avoid overloading the dishwasher. Make sure tall items are not blocking the water flow.

Cloudy glasses or residue  

Cloudiness is common in hard water areas. Limescale, too much detergent or a clogged filter may be the cause. Run a vinegar rinse and check the filter is clear. Dishwasher GreenTabs™ with built in salt and rinse aid can help prevent this.

Water pooling in the bottom  

If water collects at the base, the drain or filter may be blocked. Remove the bottom rack and clear any debris. Check the drainage holes and make sure nothing is stopping the water from flowing out. If the issue continues, the drain hose may need to be checked or straightened.

Eco Friendly Ways to Keep Your Dishwasher Clean Longer  

A few simple habits help your dishwasher stay cleaner for longer and reduce the need for deep cleaning.

• Scrape, don’t rinse: Remove loose food before loading, but skip running the tap. Modern dishwashers are designed for this.

• Choose gentle, non toxic detergents: Eco dishwasher detergent options reduce residue and help prevent grease and limescale buildup.

• Avoid bleach and harsh chemicals: These can damage seals and stainless steel parts.

• Leave the door slightly open after each cycle: This helps moisture escape and prevents mould and smells.

• Use a refillable cleaning spray: Cleaning Spray GreenTabs™ let you top up your bottle and avoid disposable cleaners.

Small changes like these keep your machine fresher for longer and help reduce water, energy and product waste.

Ready to make your next cycle a little greener? 🍽️👇

Shop Dishwasher GreenTabs™ for gentle, effective everyday cleaning, or explore our full range of sustainable cleaning products to upgrade the rest of your routine.

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