Getting rid of mould in kitchen cupboards for good involves a few key steps: cleaning the mould away, killing the mould spores, and most importantly, stopping the reason why the mould grew there in the first place, which is usually too much moisture or dampness. You can tackle this job yourself using simple household items like vinegar, but you need to be thorough and fix the underlying damp problem to make sure the mould doesn’t come back.

Image Source: www.moldguy.ca
Mould in Kitchen Cupboards: What It Is and Why It Grows
Mould is a type of fungus. It grows from tiny spores floating in the air. These spores are everywhere.
Mould spores land on surfaces. If the surface is wet or damp, mould can start to grow.
Mould needs three things to grow:
* Spores (which are always there)
* Moisture (water or dampness)
* Something to eat (like wood, food spills, or even dust)
Kitchen cupboards are often dark places. They don’t get much airflow. This makes them a perfect spot for moisture to build up.
Things that cause dampness in kitchen cupboards include:
* Leaky pipes under the sink.
* Water spills that don’t get wiped up.
* Damp dishes or food put away too soon.
* Steam from cooking that gets trapped.
* Poor air flow.
* Food crumbs or spills.
When you see mould, it often looks fuzzy or slimy. It can be different colours. Black mould is a common type you might find. Getting rid of mildew in cabinets is very similar, as mildew is also a type of fungus that grows in damp places.
Finding kitchen cabinet mould removal needed can be frustrating. But knowing why it grows helps you stop it for good.
Getting Ready to Clean Mould
Before you start cleaning, you need to get ready. This is important for your safety and to do a good job.
Safety First
Mould can be bad for your health. Breathing in mould spores can cause problems.
Here are some safety steps:
* Wear gloves: Use rubber gloves to protect your hands.
* Wear a mask: An N95 mask or similar is best. It stops you from breathing in spores.
* Open windows: Let fresh air in. This helps blow spores out and dry the area. Improving kitchen cupboard ventilation while you work is key.
* Wear old clothes: Mould spores can stick to clothes. You might want to wash these clothes right away after cleaning.
Empty Everything Out
You need to take everything out of the cupboards that have mould.
- Take out dishes, food, pots, pans, anything stored inside.
- Check the items you take out. If any items have mould on them, clean them properly. Wash dishes well. Wipe down containers. Throw away any food with mould on it.
- Place the items somewhere safe, away from the area you are cleaning. Maybe put them on a counter in another room or cover them well.
Gather Your Cleaning Supplies
You will need some tools and cleaners.
Here is a list of things you might need:
* Buckets or bowls (for mixing cleaners and plain water)
* Cleaning cloths or sponges (use ones you can throw away or wash really well after)
* Stiff brush or old toothbrush (for scrubbing stubborn spots)
* Spray bottle (for some cleaners)
* Your chosen cleaning solution (more on this next)
* Plain water (for rinsing)
* Old towels or paper towels (for drying)
* Fan or dehumidifier (for drying after cleaning)
* Garbage bags
Choosing Your Cleaner
You have a few choices for what to use to clean the mould. Some work better than others, especially for killing the roots of the mould.
Using Vinegar to Kill Mould
White vinegar is a great choice for how to clean mould in kitchen cupboards.
- Vinegar is a mild acid. It can kill many types of mould.
- It works well on porous surfaces like wood or chipboard, which many kitchen cabinets are made of. It gets into the material to kill the mould roots.
- Bleach often doesn’t kill mould roots on porous surfaces. It can just make the mould look invisible, but it’s still alive and can grow back. Bleach is better for non-porous surfaces like tiles or glass.
- Vinegar also helps deal with the musty smell mould leaves behind.
How to use vinegar:
* Fill a spray bottle with undiluted white vinegar. Don’t add water for the best mould-killing power.
* You can also put vinegar in a bowl and dip your cloth in it.
Other Cleaning Options
- Borax: Mix one cup of borax with one gallon (about 4 litres) of hot water. Stir until most of it dissolves. This is another good option that kills mould and helps stop it from coming back. You don’t need to rinse borax off porous surfaces unless children or pets might touch the area.
- Mild Detergent/Soap: For light mould or mildew, sometimes warm water with dish soap is enough to clean the surface mould. However, this may not kill the spores completely or get rid of black mould from cabinets effectively. Use this mainly for wiping down items taken from the cupboard or for mild mildew getting rid of mildew in cabinets that isn’t deep.
- Special Mould Cleaners: You can buy cleaners made for mould. Read the labels carefully. Some have strong chemicals. Make sure they are safe for use inside cupboards where you keep food. Always use these in a well-aired space.
Important Note: Never mix bleach with vinegar or ammonia. It makes toxic fumes that are very dangerous. Choose one cleaner and stick with it.
Cleaning the Mould: Step-by-Step
Now you are ready to clean. This is the main part of kitchen cabinet mould removal.
Step 1: Apply Your Cleaner
- Spray the mouldy areas with your chosen cleaner (like vinegar or borax mix).
- Don’t just spray the worst spots. Treat the area around the mould too. Spores might be there even if you can’t see growth yet.
- Let the cleaner sit on the mould for a while. This gives it time to work and kill the mould. Check the cleaner’s instructions, but often 10-15 minutes is good for vinegar.
Step 2: Scrub the Mould Away
- Put on your gloves and mask.
- Use your cleaning cloth or sponge. Start scrubbing the mouldy spots.
- For tough spots or if you need to remove black mould from cabinets that has soaked into the wood, use a stiff brush or old toothbrush.
- Scrub gently but firmly. You want to remove all the visible mould.
- Keep your cloth wet with the cleaner.
- Rinse your cloth in plain water often to remove the mould you’ve scrubbed off. Don’t put a mouldy cloth back into your cleaner bucket.
Step 3: Pay Attention to Problem Areas
- Mould under kitchen sink is very common. Leaks often happen here. Check pipes and the base of the cabinet thoroughly. These areas might need extra scrubbing and repeat treatment.
- Corners and the back of cupboards are also places where air doesn’t move well. Mould likes to hide there.
Step 4: Wipe and Rinse
- Once you’ve scrubbed all the mould away, wipe the surfaces clean with a damp cloth. Use a cloth wet with plain water.
- Rinse your plain water cloth often in clean water.
- This removes any cleaner residue and leftover mould spores.
- If you used borax and aren’t rinsing, just make sure the surface is wiped clean of debris.
Step 5: The First Dry
- Use old towels or paper towels to wipe the surfaces dry right away.
- Get as much water off as you can. This helps the final drying process.
Table: Cleaning Methods Summary
| Cleaner | What it is Good For | How to Use | Need to Rinse? (on porous surfaces) | Notes |
|---|---|---|---|---|
| White Vinegar | Killing mould roots on porous surfaces (wood, etc.) | Use undiluted. Spray or wipe on. Let sit 10-15 mins. Scrub. | Yes | Smells strong, but smell fades. Good for black mould. |
| Borax Mix | Killing mould, preventing future growth | Mix 1 cup borax with 1 gallon hot water. Stir. Apply, scrub. | No (unless touching surface) | Leaves a fine powder that helps stop mould return. |
| Mild Soap/Water | Light surface mildew, cleaning items | Mix dish soap with warm water. Wipe and scrub gently. | Yes | May not kill spores effectively on porous wood. |
| Mould Cleaner | Varies by product | Follow bottle instructions carefully. | Varies | Can be strong chemicals. Check safety for food areas. |
Drying Cabinets After Mould Cleaning
This step is just as important as cleaning. If you don’t dry the cabinets completely, mould will likely come back very quickly. Drying cabinets after mould cleaning properly stops mould from getting the moisture it needs to regrow.
Why Drying is Critical
- Mould needs moisture.
- Even if you killed the mould with cleaner, damp surfaces will let new spores grow.
- The wood or material of your cupboards can soak up water from cleaning. This moisture needs to go away.
How to Dry the Cupboards
You need to let air get to all the surfaces.
- Keep doors and drawers open: Open all the cupboard doors and drawers wide. This lets air circulate inside.
- Use a fan: Point a fan directly into the open cupboards. This moves air around and speeds up drying. A standing fan or even a small desk fan works.
- Use a dehumidifier: If you have one, place a dehumidifier near the kitchen area, especially if it’s a damp room. It will pull moisture out of the air, which helps dry the cupboards faster and lowers the overall dampness level.
- Increase air flow: Keep windows open if possible.
- Be Patient: This can take time. Don’t rush this step. Depending on how damp the cupboards were and the air in your home, it could take 24 to 48 hours or even longer for everything to be truly dry.
Check for Dryness
- Feel all the surfaces inside the cupboards. Are they cool to the touch? Do they feel damp?
- Check corners and the back panel carefully. These areas often dry slower.
- If they still feel damp, keep the fans running and leave them open longer.
- Only put items back when you are completely sure the insides are bone dry. Putting items back too soon traps moisture and invites mould back.
Preventing Mould Kitchen Cabinets: Stopping it Permanently
Cleaning mould gets rid of what you see. Killing spores helps. But stopping mould permanently means dealing with the reason it grew in the first place: dampness and poor air flow. This is the most important part of prevent mould kitchen cabinets.
Deal with Dampness in Cupboards
Find the source of the moisture and stop it.
- Check for leaks: Look closely at pipes under the kitchen sink. Check all connections. Even a slow drip can cause a lot of dampness over time. Fix any leaks right away. This is crucial for areas with mould under kitchen sink.
- Wipe up spills: Clean up any water or food spills in cupboards immediately. Don’t let them sit.
- Dry dishes properly: Make sure dishes, pots, and pans are completely dry before you put them away in cupboards. Putting away damp items traps moisture.
- Store food correctly: Keep food in airtight containers. This reduces crumbs and spills that mould can eat. It also helps if any food items create moisture.
- Reduce steam: Use your kitchen fan (extractor hood) when cooking. This pulls steam and moisture out of the air before it can settle on surfaces.
- Control room humidity: If your kitchen is generally very humid, consider using a dehumidifier in the room.
Improving Kitchen Cupboard Ventilation
Air needs to move to stop dampness from building up.
- Leave cupboard doors open sometimes: If safe and practical, leave cupboard doors open for a while after cooking or washing dishes. This lets trapped moisture escape.
- Don’t overfill cupboards: Packing cupboards too full stops air from moving around inside. Try to leave some space.
- Consider adding vents: For cupboards that are always getting mould, especially lower ones or those next to damp walls, you might consider adding small vent holes. These let air move in and out. You can buy small vents made for cabinets.
- Keep them clean: Regularly wiping down the inside of cupboards with a dry cloth can help. Cleaning removes dust and food particles mould likes, and the wiping helps you spot dampness early.
Using Moisture Absorbers
- Small moisture absorber products (like silica gel packets, calcium chloride crystals in a container) can be placed inside cupboards.
- These products soak up moisture from the air inside the cupboard.
- They won’t fix a major leak or dampness problem, but they can help in slightly humid areas or cupboards with poor airflow after you’ve fixed the main issue.
- Remember to check and replace them as needed.
Consider Sealing Wood
- Bare wood or chipboard in cupboards can easily soak up moisture.
- If you have mould problems on unfinished wood surfaces, cleaning and then applying a sealant or paint designed for kitchens or bathrooms (which resist moisture and mould) can help. Make sure it’s a low-VOC product since it’s where food is stored.
Regular Checks
- Even after cleaning and taking steps to prevent mould, it’s a good idea to check your cupboards regularly.
- Look in the corners, at the back, and under the sink.
- Smell the inside – a musty smell can mean mould is starting to grow again even if you can’t see it.
- Catching mould early makes it much easier to deal with.
What If Mould Comes Back?
You’ve cleaned, dried, and tried to stop the cause. But mould appears again. Don’t be too hard on yourself. Kitchens can be tricky.
Mould coming back usually means one thing: the source of the dampness or moisture was not fully fixed.
Possible Reasons Mould Returns
- Hidden leak: A small leak might still be there, perhaps behind the cabinet or in a pipe connection you didn’t see clearly.
- Ongoing damp source: Maybe there’s condensation from cold pipes, or moisture is coming from a wall (if the cupboard is on an outer wall that’s damp outside), or steam from cooking isn’t leaving the kitchen properly.
- Not dry enough: The cupboard might not have been completely dry when you put things back.
- Poor ventilation still: Airflow might still be blocked or not enough to dry slight dampness.
- Surrounding areas: Mould might be on a nearby wall or floor and spreading back into the cupboard.
What to Do If Mould Returns
- Clean Again: Repeat the cleaning process immediately using a strong cleaner like vinegar or borax. Remove black mould from cabinets again if it’s back.
- Look Harder for Dampness: Carefully check again for any leaks, drips, or signs of moisture build-up. Look under the sink, behind appliances, and at the back of the cupboard against the wall. Use a flashlight. Feel for damp spots.
- Increase Drying Effort: Spend extra time drying the area after cleaning. Use fans and dehumidifiers for longer.
- Improve Ventilation More: Can you add vents? Can you leave the doors open more often?
- Consider calling a Professional: If you can’t find the source of dampness, or if the mould area is very large or keeps coming back quickly, it might be time to get help.
When to Call a Professional
Sometimes, dealing with mould needs expert help.
- Large Areas: If mould covers a very large area (more than a few small patches) or goes deep into the wood.
- Unknown Source: If you can’t find why the dampness is happening. A plumber might be needed for leaks, or a building expert if dampness is coming from walls or floors.
- Health Issues: If anyone in your home has health problems (like asthma or allergies) that are getting worse because of the mould.
- Black Mould Concerns: While you can remove black mould from cabinets yourself, if it covers a big area or comes back fast, a professional can make sure it’s fully removed safely.
- Behind Walls/Under Floors: If you suspect the mould or dampness is behind the cupboards, inside walls, or under the floor. These areas are harder to clean and dry yourself.
Professional mould removers have special equipment to find moisture sources, clean deeply, and dry areas fully. They can also advise on the best ways to prevent it from coming back based on your home’s specific issues.
Frequently Asked Questions About Kitchen Cupboard Mould
Here are answers to some common questions about mould in kitchen cabinets.
Q: Is black mould in kitchen cabinets dangerous?
A: Some types of black mould (like Stachybotrys) can be harmful, especially for people with health issues. But even common black mould types should be removed because they can cause allergies or respiratory problems. It’s always best to remove any mould safely.
Q: Can I just paint over the mould?
A: No, you should never just paint over mould. Paint won’t kill the mould. The mould will keep growing under the paint and will eventually come through. You must clean and kill the mould and spores first, and make sure the area is completely dry before painting.
Q: Does bleach kill mould on wood?
A: Bleach can kill surface mould on non-porous materials. But on porous materials like wood, it often doesn’t kill the mould roots that grow deep down. It can also damage the wood. Vinegar or borax are usually better for cleaning mould on wood cabinets.
Q: How can I check for dampness if I don’t see water?
A: Feel the surfaces. Damp areas feel cooler than dry areas. You might also notice warped or stained wood. Sometimes, the first sign is a musty, earthy smell. Moisture meters can also be used to measure the water content in the wood or wall.
Q: How long does kitchen cabinet mould removal take?
A: The cleaning itself might only take an hour or two depending on how much mould there is. However, the drying time after cleaning is crucial and can take 24-48 hours or even longer. Preventing mould permanently is an ongoing effort involving keeping the area dry and airy.
Q: Can air fresheners hide the mould smell?
A: Yes, but they don’t solve the problem. A musty smell means mould is present. You need to find and remove the mould, not just cover the smell.
Q: Should I throw away items that had mould on them?
A: For non-porous items like glass or plastic, you can usually wash them thoroughly with soap and hot water. For porous items like cardboard food boxes, wood utensils, or fabric, it’s often best to throw them away if they had direct contact with mould, as spores can be hard to remove completely. Clean any containers food was stored in very well.
Wrapping Up
Getting rid of mould in kitchen cupboards permanently takes more than just wiping it away. It needs a good cleaning, killing the mould spores, thorough drying, and most importantly, finding and fixing the reason the mould started growing.
By following these steps – getting ready safely, cleaning carefully with the right products like vinegar, making sure everything is totally dry afterwards, and taking strong steps to prevent dampness and improve air flow – you can win the fight against kitchen cabinet mould. Keeping an eye on your cupboards and acting fast if you see any signs of dampness will help keep them mould-free for a long time.