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10 best mould removers that actually work

Mould thrives in damp and warm environments, which means it’s often found in bathrooms, kitchens and cellars. Not only is mould unsightly, but it can also be harmful to you and your family’s health. But with a powerful mould remover, you can get rid of existing mould and prevent unwanted spores from growing.

By Hannah Wilson | Last updated Mar 3, 2022

Woman using spray bottle for cleaning

While you should always try to ventilate your house by opening windows, drying clothes outside or even using a dehumidifier, sometimes that’s just not enough. If your bathroom doesn’t have a window or if your windows are old, then mould can be impossible to prevent.

Black mould spores can damage your clothes, curtains and even the grout between tiles, but they can also irritate your family’s allergies and cause breathing problems – which is why it’s crucial to take preventive measures to stop mould in its tracks.

Bleach only disguises spores, whereas mould removers eliminate them. Non-toxic versions contain enzymes to break down the mould, while more traditional products use chemicals that aim to banish it for good.

Our recommendations below were informed by five hours of analysing and comparing mould removers, during which time we scoured the Mumsnet forums to seek out tried-and-tested products used by real families, perused expert review sites, such as Which, and reviewed consumer feedback on retail websites such as Amazon and Wilko. We then assessed the mould removers for efficiency, affordability and ease of use. 

Whether you’re looking for a spray, foam or liquid mould remover for indoor or outdoor use, we’ve got you covered.

Here are the best mould removers to buy right now.

1. Best overall mould remover: HG Mould Spray

HG Mould Spray

Price: £5.25 | Buy now from Amazon

“HG Mould Spray. [Beats] other brands. Makes your bathroom smell like a swimming pool. Think it's chlorine based. Mould disappears in seconds.” (Tried and tested by Mumsnet user SmellMySmellbow)

“HG Mould Spray is the only thing that works in my experience.” (Rated by Mumsnet user minniemoll)

“Yes - HG Mould Remover spray. It was recommended to me by a plumber and is very high strength and effective. Make sure you protect your hands, and use it when the room is empty as it's strong and fumey.” (Recommended by Mumsnet user DorothyParkersCat)

HG Mould Spray is a name that comes up again and again (and again) on Mumsnet. Users love it because it’s affordable and it works!

Whether you’ve got mould on plastered walls, tiles, bathroom seals, grout, windows or outdoor furniture, just spray the HG Mould Spray, wait 10 minutes and wipe the product away. It will even remove coffee or tea stains from plastic worktops.

One of the reasons it’s so effective is that it contains strong chemicals to help kill the mould for good. However, the powerful chemicals are also dangerous, so ensure you read the label before use, ventilate the area well, and make sure you wear gloves, goggles and old clothes. 

Although this product is suitable for a range of surfaces, it can’t be used on all, so check the instructions and always do a patch test first.


  • Good value
  • Eliminates spore stains and prevents mould from returning
  • Suitable for bathroom, kitchen and outdoor cleaning
  • Targeted spray trigger reduces splash backs


  • Contains powerful chemicals, so use with caution
  • Can’t be used on high gloss painted walls, laminate blinds or metal (such as aluminium and stainless steel)
  • Brown discolouration may occur when using this spray on silicone paste, glazed tiles or tiles with hairline cracks

2. Best budget mould remover: Dettol Mould and Mildew Remover

Dettol Mould and Mildew Remover

Price: £3.50 | Buy now from Wilko

“Dettol Mould and Mildew Remover. It contains bleach though. Don’t even have to scrub - it just dissolves [mould]. Keep your bathroom window open for ventilation all year round if possible. But yes, you will probably have to keep [using] it periodically.” (Rated by Mumsnet user statetrooperstacey)

“Dettol Mould and Mildew [Remover] is amazing. If that doesn't work, you have real issues!” (Tried and tested by Mumsnet user peachgreen)

Dettol’s Mould and Mildew Remover appeals to many because it’s budget-friendly, easy to use and works on a range of surfaces. This mould remover contains sodium hypochlorite and the hard-to-pronounce alkyldimethylamine oxide, which effectively reduces mould spores. 

Thanks to the active bleach ingredients, there’s no scrubbing required, and once you spray it on the mould-affected area, you only need to leave it to sit for five minutes before rinsing or wiping it off. As with all Dettol products, the Dettol Mould and Mildew Remover kills 99.9% of bacteria and viruses.

We also like that you can use this mould remover in various spots around your home, as it works on ceramic basins and toilets, acrylic baths and showers, tiles, grout, chrome, stainless steel and plastic. 

As you’d expect, always be extra careful when using it – have your windows open, ideally wear a mask and gloves, and never use it on food contact surfaces.


  • Budget-friendly
  • No scrubbing required
  • Works on many surfaces
  • Kills 99.9% of bacteria and viruses


  • Strong bleach smell
  • May not remove old or stubborn mould stains
  • Harmful to fish and aquatic life (don’t let it go down the drain)

3. Best mould remover for bathrooms: Cif Black Mould Remover Spray

Cif mould remover

Price: £4.81 | Buy now from Amazon

“Cif black mould remover spray. I’m a professional cleaner and it's the best I’ve used - and I have used every product going. Spray, leave it on for five minutes and use a scrubby pad or toothbrush. Sometimes I don’t even have to scrub - it just goes once rinsed with water.” (Tried and tested by Mumsnet user howsicklyarsekissy)

Cif Perfect Finish Mould Stain Remover can be used around your home and outdoors to clean mould, mildew and other stains, but is best suited for eliminating mould in the bathroom, including baths, showers, tiles, showers and grout.

Along with sodium hypochlorite, this product also contains bleach, which means that your surfaces will be both mould-free and sparkling clean long after you’ve treated them. You can even use this spray to clean up stubborn stains such as tea and wine. 

Unlike other mould remover products, such as the Dettol Mould and Mildew Remover, Cif’s Perfect Finish doesn’t contain an overpowering smell – but we recommend you allow for good ventilation when using it and wear protective gloves at all times.

To use this product, lightly spray it on your affected areas, leave it to sit for 15 to 20 minutes (open the windows and leave the room while you wait) and then wipe it away or let it dry.  

Remember to read the label before use as it might not be suitable for all surfaces, such as anodised aluminium and linoleum. Do a patch test if you’re unsure..


  • Very strong and effective
  • Smells nice
  • Suitable for a range of surfaces around the home and outdoors 


  • Bottle is on the small side
  • May be less effective at removing mould from grouting
  • Doesn’t work well on silicone sealant

4. Best environmentally-friendly mould remover: Method Bathroom Cleaner

Method Bathroom Cleaner

Price: From £2.43 | Buy now from Amazon

“I've always been one for whatever cleaner is on offer but DF purchased some Method bathroom cleaner and it was a game-changer for me. It's great - you spray it on, leave it and then wipe away. And my god, it's good.” (Tried and tested by Mumsnet user mommybear1)

It can be tricky to find environmentally-friendly mould removers to clean and kill mould because often you need chemicals. But not with Method Bathroom Cleaner. This eucalyptus-scented cleaner, made from biodegradable and plant-based ingredients, can tackle mould and mildew stains, as well as soap scum and grime, all while leaving your bathroom smelling fresh.

And did we mention that all of Method’s products come in 100% post-consumer recycled plastic bottles and are cruelty-free and vegan-friendly? Killing mould shouldn’t be deadly to you or the planet, which is why many families rate Method’s Bathroom Cleaner as the ideal mould-removing solution.

This mould remover works to remove spores and stains in your shower, bath and on your tiles. The vertical trigger spray nozzle makes it easy to target surfaces and ensures you can cover a larger area, meaning you don’t need to use much for it to be effective. However, it might not work on stubborn stains and mould that’s been there for a while.


  • Only uses environmentally-friendly ingredients
  • Cruelty-free and vegan-friendly
  • Smells nice - fragranced with eucalyptus 


  • Not suitable for marble or natural stone surfaces
  • Might not be as effective on old mould stains

5. Best mould and mildew remover: Astonish Mould and Mildew Blaster

Astonish Mould and Mildew Blaster

Price: £1.81 | Buy now from Amazon

“Astonish makes a mould remover in a green bottle with a blue trigger. I've used this on painted walls with no problems. Spray on, leave it for 10 minutes and the mould disappears without needing much, if any, wiping.” (Rated by Mumsnet user FortunaMajor)

Astonish Mould and Mildew Blaster not only eliminates tough mildew and stubborn mould stains within 10 minutes (and without the need to scrub), but it also kills 99.9% of bacteria. 

This affordable mould remover is effective at cleaning mould and the powerful ingredients, such as sodium hypochlorite and sodium hydroxide, help to prevent it from coming back again. Although for best results, it’s recommended to use this product regularly.

Suitable for tiles, sinks, plugholes, silicone sealant, grout, walls, glass, concrete, uPVC window frames and plastic shower curtains, the Astonish Mould and Mildew Blaster is ideal for removing mould specifically in the bathroom.

The foaming trigger head helps the product cling to the surface it's sprayed on, which prevents dripping. Although, when you spray it, you might find it comes out a bit too quickly.


  • Suitable for multiple surfaces
  • Cruelty-free and vegan-friendly
  • No scrubbing required


  • Spray comes out fast
  • Need to ensure you ventilate the room when using it
  • Strong smell
  • May need to be applied several times for stubborn mould

6. Best mould remover for mouldy bath toys: Milton Sterilising Liquid

Milton Sterilising Liquid

Price: £2.60 | Buy now from Amazon

“Neat Milton (or other bottle sterilising liquid) kills most mould.” (Recommended by Mumsnet user Sprogonthetyne)

Plastic bath toys, like squirty ducks, make bath time more fun (for children, not necessarily their parents), but if you’ve ever looked inside one then prepare to be disgusted.

Because they fill with water and never have a chance to dry, this makes them an ideal breeding ground for mould – the last thing you want in your baby’s bath. You also don’t want to use harsh chemicals when these toys are going to be near your child’s skin either.

Mumsnet users recommend Milton – typically usually used for sterilising breast pumps, baby bottles, dummies or even bleaching pen marks from school shirts. It’s a very mild bleach that takes just 15 minutes to work, so it’s safe for your baby or child to use their bath toys straight afterwards. 

The Milton Sterilising Fluid kills 99.9% of germs and bacteria and can keep bath toys sterilised for 24 hours. However, as the formula is so mild,  you won’t be able to use it to tackle old or stubborn mould stains around your bath or shower.  


  • Great for bath toys
  • Child-safe and non-toxic
  • Kills 99.9% of germs


  • Mild so won’t work on large, stubborn mould patches
  • Not suitable for use on metal
  • May discolour fabric 

7. Best mould and algae remover: Wet & Forget: Mould, Lichen and Algae Remover

Wet and Forget mould remover

Price: £17.99 | Buy now from Amazon

“If you're not in too much of a hurry, there’s a product called Wet & Forget which you dilute and apply with a garden sprayer. It’s a fungicide which is activated by the weather. It will gently remove moss and mould without the aggressive action of a pressure washer.” (Tried and tested by Mumsnet user rslsys)

If you’re struggling with mould lichen and algae on your paving or patio, then the Wet & Forget Mould Lichen and Algae Remover may be your best bet. You can dilute it using one part Wet & Forget and five parts water, which means that this one bottle, which contains five litres of solution, will make a whopping 30 litres – enough for up to 300m2.

You don’t even need to scrub. Just do what it says on the container – wet the area then leave it to do its thing. If it rains, even better, as the rain helps to reactivate the product. It’s also non-acidic, non-caustic and contains no bleach, so it’s safe to use if you have pets or children.

Some users have reported being initially disappointed with its effectiveness, but this mould remover takes time to work – weeks rather than hours. So give it a chance to take effect and you could have a mould-free patio or path for the foreseeable future.


  • Covers a large area
  • Easy to apply
  • Perfect for patios, gardens and outdoor furniture


  • Expensive
  • Takes time to work
  • May need to apply more than once

8. Best black mould remover spray: Kilrock Mould Spray

Kilrock Mould Spray

Price: £7.02 | Buy now from Amazon

“Kilrock professional mould remover will shift it.” (Recommended by Mumsnet user Roselilly36)

“Kilrock mould spray is great. Just make sure you open your windows!” (Rated by Mumsnet user Iwantafuckingbreak)

Kilrock’s Mould Spray does what it says on the bottle - it blasts mould (and algae) stains away with next to no effort. With a bleaching action formula, Kilrock not only effortlessly removes black mould but also prevents unsightly stains from returning. And one 500ml bottle can treat three square metres of the wall or eight square metres of tiles.

There’s no scrubbing required either, as Kilrock does all the hard graft for you and gets to work within 15 minutes. But you will need to thoroughly wash the solution off after use.

It’s suitable for a range of surfaces including tiles, walls, baths, showers, grout, windows and sinks. The powerful spray also works on outdoor surfaces, such as sheds, ornaments and balconies. However, due to the bleach content, make sure you use it cautiously on painted surfaces.


  • Treats and prevents black mould
  • No scrubbing required
  • Works on several different surfaces


  • Strong chemical smell, so make sure you ventilate the area well
  • Not suitable for enamel, marble, granite or wood

9. Best shower mould remover: Polycell Mould Killer Spray

Polycell Mould Killer Spray

Price: £9.99 | Buy now from Amazon

“Using mould-removing products properly will not cause dangerous spores to be released… There are specific mould sprays like Polycell 3-in-1 Mould Killer. Always have an open window in the bathroom or a vent fan on (if no window) when using these as the fumes can be horrible.” (Recommended by Mumsnet user PlanDeRaccordement)

Polycell Mould Killer has a powerful fungicide in it that removes, kills and prevents the re-growth of mould in just one application. Although this mould remover is intended to be used to treat and prevent mould before decorating, it also works wonders in your bathroom thanks to the active ingredients. 

Spray Polycell onto mould build-ups in your shower or around the bath (while wearing protective gloves and goggles with a window open) and leave it for five to 10 minutes to work its magic. Then with a damp cloth, wipe it away and leave the area to dry.

Although this mould remover has a low odour, reviewers have found that, if inhaled, it can lead to some throat irritation, so always wear a protective mask as well as gloves and goggles.


  • Results can be seen after a single application
  • Quick to work
  • Easy to use


  • Need good ventilation as it has a strong smell
  • You’ll need to wear a mask as the spray can be inhaled

10. Best mould remover for silicone: UniBond Renew Silicone Sealant

UniBond Renew Silicone Sealant

Price: £8 | Buy now from Wilko

“I use this stuff - it’s brilliant!” (Tried and tested by Mumsnet user FamilyOfAliens)

If you’re struggling with recurring mould on the silicone around your shower, bath or taps, and nothing will stop it from growing back, then it might be time to refresh your bathroom with UniBond Renew Silicone Sealant. 

It’s not technically a mould remover, but it does repel, kill and prevent mould from returning once applied (although if your mould is particularly bad, you’ll need to treat the sealant with another mould remover before applying this). And the good news is you can apply this on top of existing sealant, which can save you a ton of time and stress in the long run.

Just one 130g bottle of UniBond Renew should do the trick for an entire bathroom. But some reviewers have found the integrated smoothing tool difficult to use and struggled to squeeze the bottle and apply the sealant. 


  • Repels, kills and prevents mould on silicone sealant
  • Saves time as you don’t need to completely reseal your bathroom
  • One bottle is enough to seal your bath, shower and sink


  • May need to use another mould remover product before applying this
  • Only suitable for sealant
  • Difficult to squeeze the bottle and apply
  • Takes at least six hours to dry 

Is it safe to clean black mould yourself?

Small amounts of black mould are safe to clean yourself, as long as you have the right equipment and protective gear. 

Black mould often forms when your room isn’t well ventilated (think bathrooms without windows). If left untreated, it might cause problems like asthma attacks and allergic reactions. 

You can use bleach or mould removers to try and tackle unsightly stains and spores. Most mould removers contain bleach, which can stain, as well as other powerful chemicals to break down the mould – so you should always wear protective eyewear, non-porous gloves and a mask when handling these products. Another way to protect yourself from harmful fumes and mould spores is to ventilate the room you’re cleaning. 

If you’re cleaning mould yourself, remember to carefully read and follow the instructions on the label. And never mix dangerous chemicals, such as bleach and ammonia, as these can give off toxic fumes.

How do I get rid of mould?

No matter how tempting it might be, you should never try scrubbing or scraping at mould as this can release spores into the air that you’ll then breathe in. If a general household cleaner or bleach doesn’t remove the mould, then you need to find a mould remover that can kill and prevent it from returning. 

Before you start removing the mould, make sure you’ve ventilated the room and are wearing protective gloves, goggles and a mask. Then check that the mould remover is suitable for the surface that you’re treating, and read the instructions on how to apply it.

A general guide on getting rid of mould:

  1. Remove items from the area (for example, shampoo bottles in the shower) as you don’t want these to be covered in chemicals.
  2. Follow the instructions on the label and spray or dab the mould remover on a small area. This is known as a patch test and will help you to determine whether this mould remover is suitable for your surface and if it will work.
  3. If you’re satisfied with step two, then you can go on to apply the mould remover onto your surface as directed on the label. 
  4. Leave the remover for the recommended time (often between five and 20 minutes). 
  5. Rinse thoroughly with cold water and wipe off any residue with a cloth.

Stubborn black mould stains may need several applications, so reapply the remover until you’ve successfully cleaned and killed the mould.

How do I stop black mould from coming back?

Mould spores thrive in damp and cool conditions, so the best way to stop mould from returning is to avoid creating this environment. Luckily, there are several things you can do to prevent mould from returning, including: 

  • Dry your clothes outside: Wet washing can add extra moisture to your home, which causes the perfect breeding ground for mould. If you need to dry your washing inside, avoid putting it on radiators.
  • Using a dehumidifier: Dr Andy Whittamore, an in-house GP at Asthma UK, says, “Some people find that dehumidifiers help to dry the air and prevent damp and mould. But you need to get the setting right or they can leave the air too dry and make you cough.” Dehumidifiers can remove excess moisture in the air, which can help stop mould from spreading and ultimately prevent it from returning. 
  • Keep your home ventilated: Open your windows as much as possible to let air flow in and moisture out. Place lids on pans when you’re cooking in the kitchen. Turn on extractor fans when cooking or open a door or window. Turn on the fan in your bathroom before you shower and leave it on afterwards (for 10-15 minutes) or open a window. 
  • Dry wet areas: Drying wet areas can also help to reduce the amount of moisture in your home. This might mean wiping down and drying the bathroom after having a shower or cleaning up any spillages/leaks as and when they happen.

What’s the best mould remover?

HG’s Mould Spray is loved by so many (including Mumsnet users) and it’s easy to see why. Not only is it highly effective at removing and preventing mould, but it’s also affordable and works in as little as 10 minutes.

We like that this mould remover can tackle and treat spores in your bathroom, kitchen and on outdoor furniture, and even remove stubborn tea and wine stains.

How we chose our recommendations

When choosing our recommendations, our journalists spend hours researching products by evaluating a variety of sources, including expert review sites and consumer reviews. 

To bring you the best mould remover roundup, we also investigated highly-rated products recommended on the Mumsnet forums by real families who have put these mould removers to the test. By conducting our in-depth research, we’re able to provide you with valuable insight on not only which mould removers work best but which ones are most used and loved by real people.

Why you should trust us

We work hard to provide unbiased, independent advice you can trust. We do sometimes earn revenue through affiliate (click-to-buy) links in our articles. This helps us fund more helpful articles like this one.

As a cleaning enthusiast and someone who has had to tackle mould several times, our writer Hannah knows a thing or two about the daunting task of treating and preventing mould. As such, she was determined to provide honest, independent advice and tips that’ll help you live mould-free for the foreseeable.