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Pro-Kleen Ultimate Black Spot Destroyer, Lichen Remover & Patio Cleaner 5L
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Product information
Specifications
Brand:
Pro-Kleen
Max Strength Patio Cleaner & Black Spot Remover
Tired of stubborn black spots ruining your patio? Our Ultimate Black Spot Destroyer is a max-strength, highly concentrated formula designed to tackle even the toughest lichens to restore patios, paths, and paving to their former glory—fast!
Specially Formulated for Stubborn Lichens
Lichens are a mix of fungi and bacteria that anchor deep into stone, making them tough to remove. Regular cleaners struggle, but our powerful fizzing formula breaks them down at the source—so you can simply rinse them away!
Powerful Cleaner
This formula will also clean away dirt and grime on top of black spots and lichen to leave hard surfaces looking like new.
Works Where Others Fail
· Max-strength fizzing action lifts deep-set stains
· Highly concentrated for unbeatable cleaning power
· Safe for most stone surfaces including block paving, bricks, Indian sandstone, and York stone
Easy to Use
· Apply neat using a pump sprayer or watering can
· Leave for 2-4 hours (keep pets & kids away)
· Agitate with a brush for tough black spots
· Rinse thoroughly & let dry—your patio will look brand new!
⚠ Important: Not suitable for wood, decking, resin driveways, or tarmac. Avoid use in hot weather or near water sources.
Restore your patio’s shine today—order now!
Reviews
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R TAYLOR
Good product does what it is intended to.
I have used on several areas of pavingz
4 Nov 2024
D Morrison
Great product, does exactly what if says on the label! No effort required. Spray on, hose off few hours later. Paving slabs look brand new. Highly recommend.
19 Oct 2024
E Cook
Excellent product- black spots completely destroyed and flagstones and sandstone wall look like new.
1 Sep 2024
Christopher Simpson
Excellent product.
28 Aug 2024
Angela Shepherd
Excellent product
21 Aug 2024
Colin
Good product; easy and effective to use
17 Aug 2024
Dorothy Nelson
It does what it says. Very satisfied with the result.
17 Aug 2024
Pamela Haslam
It does what it says so easy to use.
12 Aug 2024
Mrs Muriel Brunton
It does what it says it does - cleaned our patio of black spot really well. Will buy it again.
1 Aug 2024
Consumer
The product was really excellent it really did the job on my patio the difference it did was amazing
30 Jul 2024
Frequently asked questions
Could it cause damage to car tyres during the overnight treatment period
We do not recommend parking on the treated area until the area is fully rinsed after application.
What is the active ingredient and what strength is it (percentage)
This contains approximately 9.8% sodium hypochlorite.
Can it be used with my karcher jet wash machine?
We would recommend applying with a watering can or pump sprayer your pressure washer may be too powerful. Please wear protective clothing.
Does this remove pigeon poo stains and is it harmful to grass?
Yes, this would kill your grass. It was not tested on pigeon poo but may remove the stains.
I have an aluminium canopy on my patio. Can this be used with that, or will it damage the legs?
No, this is not suitable to be applied near your aluminium canopy. It would cause damage to the legs.
What is it's ph level? The sprayer I'm using needs it to be between 5-9 thanks
The pH level is 11.5-12.5.
Can I use this product on my clay block paving.
Yes, but we always recommend on testing a small inconspicuous area first.
Hi there
Has this been tested on wood stain?
Got some concrete posts that got a coating in error and I’d love to return them to their original state.
No, this would not remove wood stain from concrete posts. Please try you local D.I.Y store for a wood stain remover.
I have indian sandstone patio at my new house which is excessively covered in lichin, will this remove it and to you sell a sample of this to try.
I have 70sq mtr of patio to do.
Kind Regards,
Martin.
Yes, but we always recommend on testing a small inconspicuous area first. This covers approximately 25m2.
Will it remove black spot on my very old original sand stone.
Yes, but we always recommend on testing a small inconspicuous area first.
Will this remove large area of black staining on Indian stone. Trees next door that were overhanging our paving have aphids which drop honeydew
This will remove blackspot from your indian stone. If the black marks are dirt & grime then the Patio & Driveway cleaner would be suitable.
https://www.hygienesuppliesdirect.com/products/prod234702-5-litre-stone-and-drive-cleaner
https://www.hygienesuppliesdirect.com/products/prod234702-5-litre-stone-and-drive-cleaner
My Indian stone path runs between tarmac - will it damage the tarmac?
This could soften and damage the tarmac. So please rinse away from the tarmac or block the area before treatment. Be really careful.
Can this be used on Indian sandstone patio pointed with Marshalls Weatherpoint 365?
Yes, but we always recommend testing a small inconspicuous area first.
Sandstone patio runs water to grass and flower beds will it affect them as there's no where else to run thank you
Yes, this will damage the grass and plants around your paved area so be really careful with application & with the run off.
Can the product be allowed to dry out if left over night.,or in full sun,as natural stone absorbs.
Please apply neat on a dry but not in high temperatures and leave a minimum of 2 - 4 hours before rinsing the treated area. It can be left over night before been rinsed.
Hi can this be used on cream composite decking?
Please test a small inconspicuous area first and dilute it and rinse very well afterward. Do not leave on overnight.
Hi will this product damage my wooden sleepers I have as boarders and flower beds
This is not suitable to be used on wooden sleepers so be really careful when applying to your patio area and when rinsing off. It contains approximately 9.8% sodium hypochlorite. It will also damage plants.
Can this be used on concrete paving slabs?
Yes, but we would always recommend on doing a patch test on a small inconspicuous area first.
Will this remove white lichen?
Yes it will remove black & white lichen.
We have mahogany coloured, upvc patio doors ajoining a step. Will Pro-Kleen black spot destroyer / lichen remover damage the door frames or glass? Thanks!
Please be really careful with your application this contains sodium hypochlorite and is suitable for your patio area but not your UPVC door and glassed area.
Can i use this on an area where the pointing has been done with brush-in Jointex fixing mortar?
Please check with the manufacturer of the Jointex fixing mortar this contains sodium hypochlorite.
Can this be used on a painted, rendered wall (side of a house)
Is this the first thing to use ?
Any scrubbing first?
After rinsing, what prep before painting, and what paint to use.
Yes, this could be used on painted rendered walls. Please test a small inconspicuous area first & leave a few days. Follow the instruction label and rinse well and once fully dry the rendered wall can be painted again.
Can I use pro clean ultimate black spot cleaner on my outside brickwork and will it damage the pointing.
Yes, it can be used on outside brickwork, please follow the label instructions. Please test a small inconspicuous area of your pointing first.
Hi I have artificial grass near the area that needs doing would this product affect it thanks
Yes, but be really careful and please wash away from the artificial grass. It will damage & discolour your artificial grass.
Looks good for our York Stone patio but the grouting is Bostik patio fix jointing grout. Will this get damaged with the chemicals.
Please test a small inconspicuous area first.
I have used this on stone sills and it works great but I am now wondering if I can use it on the 2 part easy joint compound that joints my porcelain patio? The sand like jointing was originally a cream colour and now there are black patches in it? I don’t want it to damage to porcelain tiles
Please test a small inconspicuous area first and tape of the porcelain tiles to protect the coating.
Hi, Will this destroy green algae too?
Yes, it will destroy green algae.
Hi, Will this also destroy green algae/moss?
Yes, it will destroy green algae & moss.
My Indian Sandstone patio has been sealed - will this product still remove blackspot? Thanks
This will only remove black spot on top of the sealed patio. It will not remove any black spot under the sealed patio.
Hi
What is the shelf life on this please? If I don’t use it all will it keep say to a year round?
Thanks
The product doesn't have an expiry date, however, sodium hypochlorite which is the main ingredient in the product does degrade over time and the activity level becomes less so performance can be affected, this can be reduced by storing the product somewhere cool and dark and not in direct sunlight. By doing this the product will still degrade but the speed at which it does becomes significantly less. It should last a few years if stored correctly.
I am worried about my dogs paws - are you sure it will not effect them once it has been rinsed and dried?
Please follow the label instructions and once the treated area is fully dry after rinsing well then the dogs can return to the area.
Will this remove tar stains on a concrete path?
No. But we would recommend the Pro-Kleen Tar Dah Remover
https://www.hygienesuppliesdirect.com/pro-kleen-tar-dah-super-powerful-tar-remover
Always test a small inconspicuous area first.
https://www.hygienesuppliesdirect.com/pro-kleen-tar-dah-super-powerful-tar-remover
Always test a small inconspicuous area first.
Can this be used on italian porcelain outdoor slabs
We would recommend testing a small inconspicuous area first.
Can I use this on a concrete tiled roof?
No, but we would recommend using the Roof Cleaner
https://www.hygienesuppliesdirect.com/roof-cleaner
Be extra careful when rinsing off.
https://www.hygienesuppliesdirect.com/roof-cleaner
Be extra careful when rinsing off.
What is the concentration strength of the sodium hypochlorite
Cheers
This contains approximately 9.8% sodium hypochlorite.
We have a couple of drains in the patio area. I when rinsing off will product be ok going down drain.
They are Victorian drains ?
It is safe for the rinsed-off solution to go down a victorian drain.
Can you forego rinsing and simply leave it on to dry by itself?
No, this must be rinsed well after treatment. Please leave a minimum of 4 hours before rinsing well.
Hi, can this be used on silicone around a window that has mould.
Thanks
We would recommend using the Pro-Kleen Household Mould & Mildew Cleaner
https://www.hygienesuppliesdirect.com/cleaning/bathroom/mould-remover
https://www.hygienesuppliesdirect.com/cleaning/bathroom/mould-remover
Just would like to tell you what a fantastic
product this is wow so glad I found it.
Cheers a very happy user.
Thank you for taking the time to send us an email regarding the Pro-Kleen Ultimate Black Spot Destroyer they are much appreciated.
Thank you for your valued comments and custom.
What about pets
It is safe for pets after treatment is completed and the area is fully rinsed. Once the area is dry then pets can return back to the treated area.
Will the rinse off of this product kill grass and plants
Tim
Yes, this will damage the grass and plants around your paved area so be really careful with your application & with the runoff.
Is this product ok to use if washings go to a septic tank?
No, we would not recommend using this product if washings go into a septic tank.
Can it be used on a concrete bird bath which is heavily stained?
Yes, it can be used on concrete but rinse well after treatment.
Is this suitable for Portland stone?
Yes, but we always recommend testing a small inconspicuous area first.
Is this suitable for block pavers of all colours including black
Yes, this can be used on coloured block pavers. We always recommend testing a small inconspicuous area first.
I have a rubber mulch play area which is pigmented green. The tiles next to it are covered in black and white lichen. Will this damage the rubber mulch on application or from the run off after jet wash?
No, but please rinse well after treatment.
Will this damage my Geo fix that been used to point Indian stone
Please check with the manufacturer of the Geo Fix for the correct advice. Always test an inconspicuous area first and always rinse well after treatment.
There are a lot of cats in my area, can I cover the patio over night after applying?
It may be easier to apply earlier and then rinse the treated area before night. The dry-treated area should then be safe for cats. Please leave at least 4 hours before rinsing well.
Will this harm hedgehogs (once dried etc) or the creatures that hedgehogs eat?
We would recommend applying the solution earlier in the morning so it can be left a minimum of 2 to 4 hours before the treated area is rinsed well. The hedgehogs usually appear when it is dark and do not appear in the daylight. Do not apply at night if you have hedgehogs in your garden patio area.
Hi, can I use this product on my large terracotta pots
Yes, but make sure it does not come into contact with any plants in the terracotta pots, as it will destroy them.
Can this product be used on a beach stone gravel path with geotextile membrane beneath ?
The manufacturer recommends rinsing the treated area after 2 to 4 hours. Do not leave on your beach stone gravel path overnight.
Can this be used on brick walls with black lichen.
Yes, we always recommend testing a small inconspicuous area first. Leave for 2-4 hours before rinsing the treated area.
Hi can this product be used on tarmac driveway?
No, this is not suitable for use on a tarmac driveway.
Can this be used directly on to rendered walls? Does it prevent future black spots appearing?
Yes, it can be used on rendered walls. Reapplication may be required every year to eliminate the black spots.
You say use it on a dry patio but will it affect it if it rains later if I left it overnight?
It is more effective on a dry day. Apply late afternoon and leave overnight when no rain is forecast for better results.
How to protect the grass verge when applying Black Spot Destroyer
Please put old towels or something to block or rinse the black spot the other way so the grass is not damaged. Rinse the grass verge well to remove any rinsed blackspot.
Can this be used on roof tiles on the canopy outside the front of my house if I spray it on? Any excess will run into my plastic guttering will this get damaged due to the strength of the chemicals
Yes, it can be used on the roof tiles of your canopy. Please follow the label instructions. It will cause no damage but may discolour the guttering so please test a small area first. Rinse the area well.
Which, if any, of your products include a biocide to prevent black spot regrowth?
The Black Spot products contain sodium hypochlorite and not a biocide. Repeat treatment may be required if the black spot returns.
Does this have to be sprayed on or can it be applied using a paint brush?
Apply the solution directly onto the area using a pump sprayer or a watering can. It can also be applied with a paint brush.
Have sprayed on patio and left overnight, need to reapply in some badly affected areas. Can I reapply without rinsing first, then finally rinse when when all slabs are clear ?
We would advise to complete each application with rinsing, then re-apply and rinse again.
We have York stone flags on the patio with a bit of black spot, the joints in between are filled with easy joint, will it be ok to use, seen most answers saying try on small out of way place, but now reading the questions our run off would be over tarmac drive and our drains go into sewage treatment plant, could we put it on and give a really sustained rinse over tarmac?
The easy joint may soften if the black spot remover comes into contact with it so we would avoid using. This product cannot be used if it would run over a tarmac drive, as it cannot be used on tarmac.
Hi,
I used your product with excellent results. The customer now wants the Indian stone sealing. How long after using can seal the patio
Thank you
Once the treated area is rinsed down well, fully dry, and the treated area is brushed down to remove any dirt etc. Please test a small inconspicuous area before full application. The patio seal must be applied on a dry day. Do not apply in high temperatures so that it will not dry too quickly. The product is not suitable for use on lime-based cement/resin seals.
You say don’t use in high temperatures - so how high is high ?
Do not use this product in warm humid weather/high temperatures above late 20 degrees as it will dry too quickly and be less effective.
Will Ultimate black spot remover dissolve patio cement pointing, like it did when I used neat bleach
No, this will not damage pointing on your patio. Always test a small inconspicuous area first.
Will it damage limestone. I have several sculptures made of Portland andcAncaster limestone which being ruined by blackspot
No, it is unsuitable for Portland & Ancaster Limestone sculptures.
Does it make sense to leave the ultimate black spot remover on over night.
We would recommend leaving a minimum of at least 2 hours (for best results, leave overnight) and then rinse the area. Keep animals and children away from the affected area until it’s completely dry.
Can I use Black Spot on my resin drive way (Stone Bond)
We would advise against using this product on a resin driveway.
Our patio is surrounded by plants.
Will they be affected?
Yes, it may damage or discolour your plants so be really careful when rinsing the treated area. Rinse well with clean water so no residue is left to cause any damage.
Hi is it safe to use this product on my patio next to my Astro turf or would it damage my AstroTurf?
This would damage Astro turf if this product came into contact with it.
I have just re pointed my patio. How long should I wait before applying this product so as not to interrupt the mortar curing process?
Please follow the instructions with the mortar and look at the curing timescale before using the Pro-Kleen Ultimate Black Spot Destroyer.
How do you get the top off the black spot remover tried for ten minutes still wont budge. Theres child safety and actually being able to use the product Help!!!
Please press down and twist the lid to open.
What is the difference between Ultimate Black Spot Destroyer and Black Spot Remover, other than the price?
The Ultmate Black Spot Destroyer is slightly stronger
Will this make the colours in Indian Stone fade.And can it be used on red brick drives and will it make them fade.
This can be used on Indian Stone and also red brick. We always recommend testing a small inconspicuous area first. It will not make them fade colour.
Can this be used on a white marble headstone?
We would always advise to test a small inconspicuous area first as the headstone may have an additional coating.
Can you slightly dilute on a less infected area?
This can only be used neat do not dilute.
Can I dilute slightly on a lesser infected area?
No, This can only be used neat do not dilute.
Does this clear moss that is growing in between the block paving?
This will remove moss from the top of your block paving but a brush may be required to remove the area between your block paving.
Will it remove grease
It will not remove grease.
Aiming to use Ultimate Black Spot on a 3'brick wall with plants at the base, is it likely to cause issues when washed off?
Yes, it may damage or discolour your plants so be really careful when rinsing the treated area. Rinse well with clean water so no residue is left to cause any damage.
Can it been used on Brailzian Slate.i have white spots and old Cement to clean off.
Yes, this can be used on Brazilian Slate but we would always recommend on testing a small inconspicuous area first.
Can this be used on concrete slabs around a swimming pool? They have a ‘stone effect’ look on the top side but are clearly manmade when you examine the underside of them.
Yes, but we would always recommend on doing a patch test on a small inconspicuous area first.
Can this be used on stone gravel
Yes, this can be used on stone gravel.
I have outdoor self levelling compound on my path I can I use this product on this
No, this is not suitable on tarmac or resin leveling compound. Dependant on the self-leveling compound we would always recommend testing a small inconspicuous area first.
Can this be used on a silver granite patio
Yes, but we would always recommend to do a small patch test in an inconspicuous area and leave a minimum of 2 hours.
Can it be used on an empty swimming pool which has a fibreglass type liner
Yes, this can be used.
Can it be used on sandstone or limestone walls?
Yes, this can be used on sandstone or limestone walls.
Can it be applied inwinter
It can be applied all year round but is more effective in the warmer summer months.
When is the best time of the year to use this product ? Can it be used in Autumn ?
It can be used all year round but must be done a dry day with a temperature of at least 6 degrees. The performance is better in warmer temperatures or if left overnight. Must be left for a minimum of 2 hours. The area can also be agitated with a brush.
Can this be used on wooden decking to remove black spots?
No, this is not suitable to be used on wooden decking.
Does this lichen remover damage the roots of dormant plants that grow all around the paved area?
Yes, this will damage the plants around your paved area so be really careful with application.
I have White Marble plinths, capping & turned balustrades around my garden & a bricked BBQ area will your product clean the White Marble back to as new?
This can be used on white marble but we would always advise on testing a small inconspicuous area first this may have an additional coating. This will remove any blackspot from your white marble.
Will it damage my grass
Yes, it may damage or discolour your grass so be really careful when rinsing the treated area. Rinse well with clean water so no residue is left to cause any damage.
Do you have a product that gets bird droppings out off a sandstone patio that has not yet been sealed
Yes, but please test an inconspicuous area first. When treating the bird droppings treat a larger area for a more even coverage.
Can I use on my shower tiles which are travertine?
No, this is designed for outside use.
We would recommend using the Pro-Kleen Household Mould Killer linked below
https://www.hygienesuppliesdirect.com/products/prod229074-5-litre-household-mould-killer
Please follow the instruction label and test a small inconspicuous area first.
We would recommend using the Pro-Kleen Household Mould Killer linked below
https://www.hygienesuppliesdirect.com/products/prod229074-5-litre-household-mould-killer
Please follow the instruction label and test a small inconspicuous area first.
Can this be used on a rendered wall?
Yes, but we would always recommend testing a small inconspicuous area first.
Can this be used on white/cream limestone paving slabs?
If they are not sealed then this can be applied. We always advise on testing a small inconspicuous area first. Please follow the instruction label. If your slabs are sealed then do not use.
Hi can this be used on a Georgian sandstone portico thats around 10 years old and is quite badly stained Thanks in advance
Yes, but please test a small inconspicuous area first.
Hi can I use this on outdoor limestone?
If they are not sealed then this can be applied. We always advise on testing a small inconspicuous area first. Please follow the instruction label. If your slabs are sealed then do not use.
Is it best to use this before pressure washing dirty pavings, or afterwards for resistant black spots?
No, please follow the instruction label and rinse the treated area after a minimum of 4 hours or for better results leave overnight and then rinse the treated area.
How can I protect artificial grass from this product?
Please apply a barrier or be extra careful and wash away from the Artifical Grass so that it is not damaged or discoloured.
Can this be used to clean a stone fireplace surround that is stained with soot etc?
No, this is not suitable for inside use.
How long after, when I’ve used this product, can I plant in the soil where this product has been drain off?
Please add additional water to the run off area and leave overnight before planting again in the soil.
Can I use it on old York stone on my terrace. I jet wash etc, just cannot get the black spots and stains off. Thank you
Yes, but always test a small inconspicuous area first.
I have an indian sandstone patio approx 50sq.m.peppered with black spot. Confused by so many products and prices. Which is best value? GL5 4HJ
The Pro-Kleen Ultimate Black Spot Destroyer Lichen Remover is the strongest of the Black Spot products available. A 5l bottle covers approximately 25m2.
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I understand the need to keep away from growing plants and grass when applying but what happens when you rinse the product after leaving it overnight or for x hours - is the product diluted and made less harmful to plants when washing away afterwards? Im wondering if the grass around the patio is going to die despite being careful when I rinse after leaving overnight.
Thanks
Yes, it may damage or discolour your plants and grassed area so be really careful when rinsing the treated area. Rinse well with clean water so no residue is left to cause any damage.
Can I use Pro-Kleen Ultimate Black Spot Destroyer Lichen Remover 5L on my new porcelain slabs to remove some set on concrete and other stains?
No, this would not be suitable for set concrete and other stains.
Can this be used where Sika fast fix jointing compound has been used for pointing?
No, this is not suitable to be used with Sika fast fix jointing compound.
Can it be used on slate and is it best to power jet the patio first? Thanks
Please apply neat and then rinse off as per instructions.
Can it be used on promenade flat roof tiles on our balcony?
Thanks
Yes, Please follow the instruction label and wear protective clothing and be careful when rinsing the treated area.
I want to clean thin concrete tiles which are on my balcony & are bonded onto a felt roofing material like Ruberoid. will it damage the roofing felt?
We always recommend testing a small inconspicuous area first.
Can I use on light grey porcelain slabs?
No, this would not be suitable.
How is it best to rinse after drying. If I power spray it when dry will it affect close by upvc windows etc. Can I just rinse with watering can? Thanks
Please apply neat and leave a minimum of 2 - 4 hours before rinsing the treated area. You can rinse with a watering can or a pump sprayer.
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We aim to answer all questions as soon as possible - often within a few hours! Although please bear in mind that during busier periods it may take up to 48 hours to receive a response. We look forward to hearing from you.
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