How To Clean A Dishwasher Naturally: Easy Monthly Deep Clean For A Fresher Kitchen

You know that slightly suspicious smell that wafts out when you open the dishwasher and suddenly everyone in the kitchen pretends they didn’t notice it? Yes, that one. For something that spends its life washing dishes, a dishwasher can get surprisingly grimy.

Food scraps, grease, hard water marks, detergent build-up and that mystery gunk hiding around the rubber seal can all make your dishwasher work harder than it needs to. And if your glasses are coming out cloudy, your plates still feel a bit greasy, or the whole thing smells like last Tuesday’s leftovers, it is probably time for a proper clean.

The good news is that cleaning a dishwasher is not complicated, expensive or especially glamorous. It is one of those easy home maintenance jobs that takes very little effort but makes the whole kitchen feel fresher. If you are already making your own cleaners or leaning into a more modern homesteading-style home routine, this is a great little habit to add alongside things like homemade laundry detergent and DIY natural household cleaners.

Why Your Dishwasher Needs Cleaning

It feels a bit ridiculous, doesn’t it? The machine that cleans everything else needs cleaning too.

But every dishwasher collects little bits of food, soap scum, grease and mineral residue over time. The filter catches a lot of it, but if that filter is not cleaned regularly, it can become the reason your dishwasher smells bad or leaves dishes looking less than sparkling.

A dirty dishwasher can cause:

• Bad odours when you open the door
• Greasy plates or cloudy glasses
• Poor water drainage
• Food specks left on dishes
• A musty smell around the door seal
• Detergent residue in the dispenser
• Longer or less effective wash cycles

This is one of those jobs where a little prevention saves a lot of muttering later. And frankly, I would rather clean the dishwasher for ten minutes than rewash a whole load of dishes by hand.

What You Need To Clean A Dishwasher

You probably already have most of these supplies in the cupboard:

• White vinegar
• Baking soda
• Dish soap
• A soft toothbrush or small cleaning brush
• Microfiber cloth
• Sponge
• Toothpick or skewer
• Small bowl or measuring cup
• Rubber gloves, if you prefer
• Optional: commercial dishwasher cleaner

A quick note on vinegar: use it in moderation. White vinegar is brilliant for helping freshen and loosen build-up, but you do not need to pour half a bottle through the machine every week. A sensible monthly clean is plenty for most households.

Step 1: Empty The Dishwasher Completely

Start with an empty dishwasher. Remove any dishes, cutlery, racks if they lift out easily, and anything that does not belong in there. I once found a tiny jar label glued to the bottom of mine, which explains a lot about the “why does this smell like wet cardboard?” situation.

Check the bottom of the dishwasher for obvious food scraps, broken glass, bits of paper, seeds, pasta, or anything else that has escaped the plates. Remove it with a paper towel or cloth.

This small step alone can make a big difference, especially if your dishwasher has been smelling stale.

Step 2: Clean The Dishwasher Filter

The filter is usually at the bottom of the dishwasher, under the lower spray arm. Most modern dishwashers have a twist-out filter, but if you are not sure, check your manual or look up your dishwasher model online.

Remove the filter carefully and rinse it under warm running water. Add a little dish soap and use a soft toothbrush to scrub away grease, food particles and residue from the mesh and plastic frame.

Do not use anything too harsh or scratchy here. The aim is to clean the filter, not punish it for every lasagne dish it has ever endured.

Once it is clean, rinse well and lock it back into place properly. Never run the dishwasher without the filter securely fitted, as it can damage the machine.

Step 3: Wipe The Door Seal And Edges

This is the part people forget, and it is often where the worst gunk lives.

Use a damp microfiber cloth or sponge with warm soapy water to wipe around:

• The rubber door seal
• The inside door edges
• The detergent dispenser
• The cutlery basket
• The corners where crumbs collect
• The top lip of the dishwasher door

If there is stubborn grime, use an old toothbrush to gently scrub it away. Be gentle around rubber seals, because they help stop leaks and you do not want to rough them up.

This same “hidden grime” problem happens with lots of household appliances, which is why I also love doing a regular reset on things like the front load washing machine. It is never the shiny outside that causes the trouble — it is always the sneaky little crevices.

Step 4: Check The Spray Arms

The spray arms are what move water around the dishwasher. If the tiny holes get blocked with food or mineral build-up, the water cannot spray properly, and your dishes may come out half-clean.

Gently spin the spray arms to make sure they move freely. If you can remove them according to your dishwasher’s instructions, take them out and rinse them under warm water.

Use a toothpick or wooden skewer to clear any blocked spray holes. Avoid using anything metal or sharp that might damage the openings.

This is especially useful if you have hard water or if your dishwasher has started leaving grit on cups and bowls.

Step 5: Run A Vinegar Cleaning Cycle

Place a dishwasher-safe bowl or measuring cup filled with one cup of white vinegar on the top rack of the empty dishwasher.

Run a hot water cycle.

The vinegar helps loosen grease, freshen odours and reduce some mineral build-up. You do not need detergent for this cycle.

I like this method because it is simple, inexpensive and does not involve bringing home yet another bottle of something with a label promising miracles. That said, if your dishwasher has heavy limescale or you live in a hard water area, a proper dishwasher cleaning tablet can be worth keeping on hand.

Affiliate note: a dishwasher cleaner tablet, a good microfiber cloth set and a sturdy little cleaning brush are useful additions to a natural cleaning cupboard.

Step 6: Freshen With Baking Soda

After the vinegar cycle has finished, sprinkle one cup of baking soda across the bottom of the dishwasher.

Run a short hot cycle.

Baking soda helps neutralise lingering smells and leaves the inside feeling fresher. This is a nice finishing step if your dishwasher has been particularly pongy or if you have been washing lots of greasy pans.

Just do not pile it into the dispenser. Sprinkle it across the base of the empty dishwasher instead.

Step 7: Polish The Outside

Once the inside is fresh, give the outside a quick wipe.

For stainless steel dishwashers, use a microfiber cloth and wipe in the direction of the grain. A little warm soapy water is usually enough for everyday marks, but a stainless steel cleaner can help with fingerprints if your dishwasher sits in a very visible spot.

For painted or plastic fronts, use a damp cloth and mild dish soap. Avoid abrasive scrubbers, especially around control panels.

This is one of those tiny finishing touches that makes the kitchen feel instantly cleaner, rather like wiping down the sink after doing a batch of DIY garbage disposal cleaner.

How Often Should You Clean A Dishwasher?

For most homes, this easy routine works well:

After each load:
Remove any large food scraps from the bottom of the dishwasher.

Weekly:
Wipe the door seal and quickly rinse the filter if your dishwasher gets heavy use.

Monthly:
Deep clean the filter, wipe the seals, check the spray arms and run a vinegar and baking soda freshening cycle.

As needed:
Clean the outside, polish stainless steel and use a commercial dishwasher cleaner if you notice heavy limescale or stubborn smells.

If you run your dishwasher every day, have a large family, wash lots of greasy pans, or live in a hard water area, you may need to clean it more often.

Can You Clean A Dishwasher With Bleach?

I would avoid bleach for routine dishwasher cleaning, especially if your dishwasher has a stainless steel interior.

Never mix bleach with vinegar or any other cleaning product. That is not a “make it stronger” situation — that is a dangerous fumes situation.

If you are dealing with mould, check your dishwasher manual first and use a cleaner that is suitable for your machine. For everyday odours and build-up, vinegar, baking soda, dish soap and regular filter cleaning are usually enough.

Why Does My Dishwasher Still Smell After Cleaning?

If your dishwasher still smells after a full clean, check these common trouble spots:

• The filter may not be fully clean
• Food could be trapped under the spray arm
• The drain area may have build-up
• The door seal may still have residue
• The hose or plumbing may be holding odours
• Dishes may be sitting too long before washing
• The dishwasher may not be drying properly

Try leaving the door slightly open after a cycle to let moisture escape. A damp, closed dishwasher is basically a spa retreat for smells, and not the good kind.

If the smell is strong, rotten, sewage-like or keeps coming back quickly, it may be a plumbing or drainage issue rather than a cleaning issue.

Mistakes To Avoid When Cleaning Your Dishwasher

A few common dishwasher-cleaning mistakes can make things worse:

Do not run it without the filter fitted.
That filter is there for a reason.

Do not use too much vinegar too often.
A monthly freshen is usually enough.

Do not use abrasive scrubbers on seals or stainless steel.
Gentle cleaning is better.

Do not ignore the door gasket.
That little rubber strip can hold an impressive amount of grime.

Do not overload the dishwasher and then blame the machine.
We have all done it. Sometimes the poor thing simply cannot spray water through a leaning tower of plates.

Do not mix cleaning products.
Especially bleach, vinegar, ammonia or commercial cleaners. Pick one method and stick with it.

Easy Natural Dishwasher Cleaning Recipe

Here is the quick version to save:

Monthly Dishwasher Freshening Clean

1. Empty the dishwasher.
2. Remove and scrub the filter with warm soapy water.
3. Wipe the rubber seal, door edges and detergent dispenser.
4. Check spray arm holes and clear blockages.
5. Place one cup of white vinegar in a bowl on the top rack.
6. Run a hot cycle.
7. Sprinkle one cup of baking soda across the bottom.
8. Run a short hot cycle.
9. Wipe the outside and leave the door slightly open to dry.

Simple, cheap, and no dramatic cleaning cupboard required.

A Little Kitchen Reset Worth Doing

Cleaning the dishwasher is not exactly the most exciting household job, but it is one of those little routines that makes everything else run better. Your dishes come out cleaner, your kitchen smells fresher, and you are less likely to end up standing there wondering why the “clean” glasses look like they have been through a sandstorm.

Add it to your monthly kitchen reset, right alongside wiping out the fridge, refreshing the sink, and making up a batch of your favourite eco-friendly carpet freshener if you are in a properly productive mood.

And if you are not? Clean the filter and call it a win. Some days that absolutely counts.