Best Patio Cleaner Reviews UK
The Top Rated Models In 2019

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Have you been thinking about spending more time in your garden but the sight of algae, mould, or lichen is putting you off? It’s time to take back your yard with the best patio cleaner on the market.

These cleaning products effectively remove all that nasty stuff, improve the appearance of the patio and make it less slippery. Check out our review for more information.

Best Patio Cleaner Comparison Chart

The Best 10 Patio Cleaner On The Market Reviewed

Our top patio cleaner is a brand that has been delivering quality products for up to 30 years.

Wet & Forget is not one to slack off when it comes to delivering the best. Its quality assurance and the high-performance rate is recognized on a worldwide scale. 

It performs efficiently in removing moss and mould stains off your patio. Its gentle cleaning action ensures the cleaned surface never sustains any chemical damage. 

As the name implies, you need no scrubbing, brushing or rinsing to get stains off your patio.

All you have to do is apply and forget! Its ease-of-use, biodegradable selective surfactants and 100% efficiency makes it the best patio cleaning agent you can ever buy.

Products Specifications

  • Size: 5 litres

The Main Reason Why People Like It

Wet & Forget is a mild but powerful cleaning property allows you to apply its service on a wide range of surfaces. This cleaning agent is so versatile, regardless of its potency, you can use it on surfaces spanning from asphalt, limestone, upholstery, furniture, sails, textured finishes, tiles and even painted surfaces. Also, the list doesn’t end there. Why else do you think it is the best patio cleaner UK markets have to offer?

Standout Features

This path cleaner displays so many outstanding features, which is why it is a widely sought-after product in the world market. One is its non-acidic, non-bleach, non-caustic liquid property with no shelf life. While most patio cleaners tend to have at least one of these properties, Wet & Forget proves to be better at cleaning, even without these. This property also makes it very environment-friendly and biodegradable. Another outstanding feature is that it continues to reactivate upon contact with water long after application. This, it can do for up to a year!

  • Extremely easy to apply. Just wet the area and leave.
  • Incredible cleaning potency lasting up to a year after application.
  • Made with biodegradable materials
  • 5ltrs make up to 30 litres of the cleaning agent; enough to cover up to 300m²
  • Applicable to an extensive range of surfaces, including organic materials
  • No shelf life
  • Takes time to remove tougher stains

That Smartseal Xtreme comes second in our review. Its high-quality performance is why it is one of our top patio cleaning products.

Smartseal Patio Clean Xtreme combines 4 super active ingredients specially designed to burn through surface dirt and grime.

It’s highly effective formula clears moss, algae, lichen and black spot off your patio.

This product is a great way to maintain an attractive look on concrete, limestone, Indian sandstone and block surfaces.

Fast, powerful, affordable and easy to use, Smartseal Patio Clean Xtreme is a must-have for you.

Products Specifications

  • Size: 5 litres

The Main Reason Why People Like It

Efficiency is the primary factor that pulls users to Smartseal Patio Clean Xtreme. Once applied to your patio, this product is potent enough to eat through grime and organic growth with almost surgical precision. Once rinsed off, many users were both glad and surprised that they never needed a brush.

Standout Features

So many features make the Smartseal Patio Clean Xtreme stand out among the numerous products promised to pamper your patio surfaces. First, its 4-ingredient combo effectively forces grime and organic dirt off the surfaces for easy rinsing off. Secondly, its efficiency does not depend on using a large volume. With a dilute ratio of 1:1, you can clean up as much as 40m² of patio space.

  • Fast-acting, highly powerful 4-ingredient formula
  • Effective for porous external surfaces
  • Requires very little water pressure
  • Kills moss, algae, green, white, yellow and black spot lichens
  • Not applicable for asphalt surfaces
  • Highly contaminated areas require longer time or reapplication

Want great value for your money as you teach those patio outgrowths a lesson?

Then, look no further! Jarder Spray & Leave is a top choice for making your patio surfaces look spanking clean with minimal effort.

This fantastic cleaner employs a biodegradable PH8, non-bleach formula that guarantees you excellent results with every use.

Mix, spray and leave for 2-3 days and return to a driveway you would hardly recognize.

Also, it keeps acting for up to 6 months, or even a year in some instances!

Products Specifications

  • Size: 4 x 5litres

The Main Reason Why People Like It

People want a great value at a reasonable price, and this is what Jarder Spray & Leave offers them. For the price it is set, you get four 5-litre bottles of compelling patio cleaner solution in your shopping bag.

Standout Features

One outstanding feature displayed by this product is its no-holds-barred surface cleaning capacity. Jarder Spray & Leave is perfect for all kinds of stone and hard outdoor surfaces. It is also very efficient in treating artificial grass, leaving it lichen, algae and moss-free. Another is its super concentrate property. One 5-litre bottle mixed with water makes at least 30 litres of the solution. This gives you enough to cover a whooping 250m² area!

  • Super sturdy, easy-to-mix and apply the concentrate
  • Works on all hard surfaces
  • 100% biodegradable and safe once dried
  • Continuous regrowth prevention for up to 6 months
  • Great value for money
  • It takes 2 to 3 days to see results. In some cases, maybe a week.

Everyone who has a patio knows how much of a headache controlling black spot lichens can make, especially on sandstone.

This is why a cleaner like this exists. Floorseal Patio Black Spot Remover Plus is specially formulated to wipe black spot lichens off sandstone surfaces.

This powerful cleaning agent is most ideal for use on York sandstone, Indian stone, concrete and rock pavers. 

It is fast-acting, highly potent and produces impressive results where other black spot lichen removers have failed. Hardly would you not see this beautiful product mentioned in most patio black spot remover reviews.

Products Specifications

  • Size: 5 litres

The Main Reason Why People Like It

This product is almost the most potent black spot lichen remover on the market. The combined agents in its highly effective formula make it 5 times stronger than most black spot lichen removers.

Standout Features

One outstanding factor is it makes cleaning patios infested with black spot lichens look like a breeze. The product performs this task, well-known to be a hectic one, in the space of an hour. Once completed, a light jet wash takes the stains off quickly. This feature makes it the best patio cleaner chemical for surfaces made of natural stone, as well as clay-based tiles.

  • Specially formulated to attack black stop lichens
  • 5x more potent than standard black spot lichen removers
  • Works wonders on natural stone surfaces
  • Easy to mix and apply
  • Spots may require little brushing for best results

Tackling green mould and algae on the patio becomes a walk in the park with Pro-Kleen.

This highly effective solution is a sure way of getting rid of dirt and grime without stress.

Pro-Kleen Patio & Driveway Cleaner revitalizes driveways and patios that have been abandoned for a long time. Maintaining a clean patio no longer stays a dream with this product in your arsenal. 

It works efficiently in removing dirt from block paving, steps, concrete flags, paths, and of course, patios. Set at a price that is worth the buy, Pro-Kleen is also easy to use as it is most efficient when applied neat.

Products Specifications

  • Size: 10 litres

The Main Reason Why People Like It

Pro-Kleen Patio & Driveway Cleaner delivers guaranteed results in a brief time, especially when applied neat. This patio cleaning solution gets to work almost immediately, giving you results in about two hours. Once applied and left for the stipulated time before wash down, your patio comes up looking as good as new.

Standout Features

An outstanding feature of this product is how it gives you enough quantity to make up for the direct application. Pro-Kleen comes in two 5-litre bottles, with one enough to effectively clean up to 40m² on your patio!

  • Potent and effective formula
  • Easy to use, no mixing fuss; apply, wait and wash down
  • Easy to apply directly with a watering can or a pressure sprayer
  • Great value for your money
  • Cannot be used on tarmac

Pro-Kleen is renowned for making quality solutions for moss removal from paths, which is why it’s featured on some of the best patio cleaner reviews.

The Simple Spray & Walk Away concentrate is a highly potent moss and algae remover.

It is specially formulated to tackle moss, green algae and mould on most hard surfaces, leaving excellent results.

It’s also effortless to use- spray and walk away! Pro-Kleen is valid on wood, PVC, concrete, terracotta, glass, plastic, tarmac and many other surfaces.

This fluid is, in fact, one of the most effective ways to remove moss from the patio.

Products Specifications

  • Size: 2 x 5 litres

The Main Reason Why People Like It

Its easy application makes Pro-Kleen Simple Spray & Walk Away from one of the best-selling patio algae removal fluids available. Its super effective solution blesses you with little application requirements. All you have to do is spray and leave for a few days to rejuvenate your patio.

Standout Features

One outstanding feature is how effective this patio moss cleaner still is even after dilution. At a mix ratio of 1 part solution with 4 parts of water, Pro-Kleen still delivers fantastic results. Another is it continues to prevent moss, algae and lichen regrowth on your patio for up to half a year!

  • Very easy to apply- no need for a pressure washer, spray and leave
  • Intense, yet biodegradable cleaning ingredients
  • Ideal algae cleaner for all outdoor hard surfaces
  • Non-acidic, non-caustic and no bleach content
  • Pet-friendly once dry
  • Profoundly affected areas will need a second treatment
  • Black slab stains might need to be pre-jetwashed

This fantastic product has been featured in some of the best patio cleaner reviews around.

ULTIMA-PLUS XP is a complete package for getting rid of moss, algae and green mould, keeping your patios pristine.

Its professional-strength fluid works on a wide range of hard surfaces, including stonemasonry, asbestos and terracotta pots.

This pet-friendly patio cleaner contains neither bleach nor acid and doesn’t discolour surfaces.

ULTIMA XP is the ultimate moss killer for paths and patios, creating a protective shield around it long after drying.

Products Specifications

  • Size: 5 litres

The Main Reason Why People Like It

The fact that you don’t need to rinse after using it on green moss is a massive plus among users. ULTIMA-PLUS XP uses a maximum-strength formula that eats through and virtually disintegrates moss, as well as algae. This makes it a highly sought-after patio moss killer for both home and professional garden maintenance.

Standout Features

ULTIMA-PLUS XP is highly potent, requiring just a little of it to gain maximum results. 1 part fluid with 9 parts water means you get 95 litres of solution from a 5 litre bottle. The result is enough solution to cover up to 400m² of space! This amazing pet-friendly moss killer can even be diluted further- 1 part with 18 parts water- for lighter treatments.

  • Super concentrate formula that gives you more solution with less fluid
  • Impressive dilution rate
  • Suitable moss cleaner for application on all hard surfaces
  • 100% biodegradable and pet-friendly after drying
  • Does no stain surfaces applied to
  • More dilution might not work as expected in some cases

An almost unrivalled patio acid cleaner on the market, Bostik Cementone Brick & Patio Cleaner is worthy of mention.

This acid-based cleaner is handy in removing general dirt off patio surfaces.

Bostik Cementone cleaner is ideal for tackling limescale and is an efficient patio algae cleaner.

Use this fluid with a patio scrubber and see the wonders it performs on your pavement.

Bostik Cementone deserves to get a spot in any patio cleaner reviews for its high-quality performance.

Products Specifications

  • Size: 5 litres

The Main Reason Why People Like It

Bostik Cementone Brick & Patio Cleaner is super active when it comes to treating brickwork and block pavements. It displays fantastic results, most notably in these cases, making it the top patio acid cleaner choice for patios with block surfaces.

Standout Features

Bostik Cementone is very specific, meaning if you’re looking for block patio cleaner, that’s precisely what you get. Its formula is specially designed to tackle algae and grime on those kinds of surfaces.

  • Powerful acid-based formula
  • Very useful on block and brick surfaces
  • Fast acting with results in less than 3 days
  • Superb for removing limescale
  • Requires stiff brushing

Though sitting at the bottom five of our list, this is one of the most active organic patio cleaning agents available.

Algon Organic cleaner is a fantastic path and patio cleaner which effectively takes out algae, grime, dirt and moss.

A potent concentrate, Algon Organic cleaner is tough on grime but gentle on your path and patio surfaces.

Its environmental-friendly formula makes it safe for pets and children after drying. Using Algon Organic cleaner is the best way to clean patio when on a low budget.

Products Specifications

  • Size: 2.5 litres

The Main Reason Why People Like It

For a cleaning fluid of its size and price, Algon Organic Path & Patio cleaner gives you quality results at little application effort. Applying this solution is pretty straightforward- with just a garden sprayer, soft broom or even a paintbrush. After that, you leave it to do its work: no need to rinse off.

Standout Features

One major outstanding feature is that it keeps acting on your patio for up to a year after application. This doesn’t in any way harm the environment as the patio cleaning fluid is very safe for children, pets and even wildlife. Also, Algon Organic Path & Patio Cleaner is perfect for cleaning greenhouse and polytunnel.

  • Powerful concentrate solution​​​​
  • Organic, eco-friendly ingredients
  • Easy to apply and use with no need to rinse off
  • Keeps protecting for up to a year
  • May not be very efficient in some areas when diluted

Our final pick in this review is none other than Patio Magic! Patio Cleaner.

This exciting product is a great pick for when cleaning a patio seem like an expensive ordeal. 

A high price isn’t just the only thing pushing this patio cleaner. Its highly concentrated, long-lasting solution is a fantastic treatment for algae and green moulds.

It is also highly effective on a wide range of outdoor paved surfaces, including tarmac patios and Perspex.

Robust, efficient and biodegradable, Patio Magic! Did a great job releasing this one on the market.

Products Specifications

  • Size: 2.5 litres

The Main Reason Why People Like It

Patio Magic! Patio Cleaner, in addition to being an efficient remover of algae, green mould, black mould and lichens also double as a pre-paint fungicidal wash. Its anti-bacterial formula disinfects surfaces, keeping them free from organic grime.

Standout Features

One major outstanding feature of Patio Magic! Is it can be used both outdoors and indoors. Its biodegradable composition makes it an eco-friendly cleaning fluid that can be applied on indoor surfaces. This quality product also requires no patio cleaning brush; apply to affected areas and leave to do the work.

  • The highly concentrated solution that works in days and lasts in months
  • Suitable for both indoor and outdoor surfaces
  • Can double as a pre-paint fungicidal wash
  • Works on a wide range of surfaces, including tarmac
  • Environmental friendly
  • Not so useful on residual black mould stains
  • Takes longer time to show results


Patios are a great space to relax, have a light snack or hang out with friends. However, no one would love to stay in a patio infested with slime, moss, or mould. Not only is it unpleasant to see but also unhygienic. Plus, algae growth can make patio surface slippery and hazardous. This is why it’s essential to clean them always.

However, getting the most effective option can be tough as you find yourself wondering which patio cleaner is the best. So, we’ve put together this comprehensive review to assist you. Each product suggested here was selected based on careful research on their features and testimonies from a wide range of users.

A buying guide is also included in this review to give you that extra edge. Every product here is amazing, but our recommendation would be Jarder Spray & Leave Concentrate Cleaner. It is sturdy, easy to use, works on all hard surfaces and gives you more solution at an affordable price.

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Patio Cleaner Buying Guide

A Sunday afternoon relaxing on your lawn with your family while the kids play on the trampoline and the adults sit on an inflatable hot tub is bliss. But it can be a nightmare if the patio is infested with moulds, algae, and dirt, or ants have taken over the grass in your lawn.

An ant killer will effectively get rid of the ants while a pressure washer can clean the patio. However, a patio cleaner will resolve a variety of issues at a go. You can use it with a garden hose to kill moulds and algae and remove stains from the patio. But you need the right brand to achieve the best results and we will show you how to get it.

So, you have a messy looking patio. You can’t stand it; your friends can’t stand it. Its mere sight is a nightmare, and you’ve set your mind to do something about it. You’ve tried a patio scrubber, but the results aren’t satisfactory. So, you’ve decided to use a patio cleaning fluid. Now, while such a move is understandable, walking into a supermart half-agitated without an idea what you’re looking for is no different from running into a line of fire without Kevlar! You might end up paying for what smells potent but isn’t.

This is why you need our buying guide. Here, we’ve documented some of the essential considerations to put in mind when shopping for an ideal pavement cleaner for your patio. The guide is explicitly fashioned to help you get a beneficial product and great value for your money. So, we highly recommend you follow its instructions and consider the following questions before picking out the best path and patio cleaner.

How Infested is My Patio?

Before selecting a product, ask yourself if it will be efficient enough in both quality and volume. The higher the infestation, the more solution you might have to apply. In most cases, getting a highly concentrated patio cleaner might be the solution you need. If the level of patio stain is very intense, go for a product that is specially designed for heavily contaminated patios and paths. Concentrates tend to produce excellent results as they can be diluted and still won’t lose effectiveness.

How Powerful is this Cleaner?

Some are far more effective than others. The strength of a patio cleaner determines how well it will clean up your patio surface. While most patio cleaners are potent, some of the best focus on a specific group of patio grime. Most black mould patio cleaners are exclusive, therefore very effective in treating such. Other cleaners are majorly efficient at achieving lichen removal from the patio. If you’re focusing on one or two types of infestation, select a product specially formulated for that purpose. Not all ‘All-purpose’ cleaners are truly all-purpose, so it’s usually best to purchase a product that will tackle the significant problem head-on.

How Does It Work?

Patio and path cleaners work in different formats and whichever you pick depends on certain factors. If you’re looking for a solution that would require minimal effort, you should purchase a ‘Spray and Leave’ product. These cleaners only require you to apply to the affected areas and leave for a stipulated time. While some promise results in under hours, others might take days, but eventually, you wouldn’t have to do anything yourself. Other types might require minor scrubbing to agitate the result, so go for those if that won’t be a trouble. Also, some still require a little more work- light rinsing or sometimes, a jet wash. You should choose based on how much time and effort you know you can afford to invest in treating the patio.

What Kind of Surface am I Treating?

This might be perhaps the most crucial factor to consider before buying a patio cleaner. Generally, patio cleaners are designed to work most efficiently on specific surfaces. There are patio cleaners for concrete, limestone, wood, block paving, tarmac and many others. 

You need to put the kind of material the surface is made of into consideration before you buy a cleaner. This is because the composition of a cleaner specifically designed for concrete might damage a sandstone patio surface.

Moreover, a block surface might not be efficiently treated if the cleaner employed is fashioned, especially for wood or glass. 

Also, there might be some chemicals in the cleaner that might react negatively with the surface applied to. Cleaners containing bleach would damage wooden patio surfaces, and sodium hydroxide can be unsafe for uncoated surfaces.

How Much Space am I Working On?

If you’ve set out to get the ultimate cleaning fluid, ask yourself if the bottle you’ve purchased will cover your entire patio space. The density in the solution of patio cleaners vary greatly, and this determines how much of the material you have to work with. The denser the cleaning solution, the smaller the area you can use it on. Also, many patio cleaners are concentrated and as such, can be diluted. Be sure to check the instructions manual if you’re buying such and stick to the recommended mix ratio for good results. If your patio is large, go for heavy concentrates. When diluted as per instructions are given, they give more volume of solution for broader coverage.

Is it Eco-and Pet-Friendly?

Just as you consider the power, potency and patio surface before buying a cleaner, also consider environmental safety. Patios are exposed to the outdoors, except for indoor patios. As such, they are exposed to nature as animals, and even pets come in constant contact with them. Fortunately, most patio cleaning fluids are made with pet-friendly materials, but it doesn’t hurt to double-check. Eco-friendly cleaning fluids usually advise that you wait a stipulated time before letting your pets and even your kids on the patio. They’re also entirely biodegradable.

How much can I spare?

You also have a factor cost when purchasing a patio cleaning fluid. While many are quite pricey, this does not in any way indicate their level of potency. Make sure you analyze the features carefully, deciding if each one checks off on your list before paying for it. Also, if you’re working on a budget, go for a patio cleaner that offers most of the features you desire at the price range you can afford.

Understanding the Jargons.

This review does not make use of any jargon or unfamiliar abbreviation.

What are the different features?

Many features on most patio cleaners are considered very handy, but only a few attract general appeal. One of these is the versatility of the cleaner.

While many users seek the best patio cleanser the market has to offer, must keep in mind how much they can do with it. 

Patio cleansers that offer effective control over virtually all sorts of patio discolouration and infestation tend to get a second glance from customers and even recommendations when they deliver. This also comes in handy when the cleaner can be used effectively on a broad range of surfaces.

Another handy feature is environmental and pet-friendliness. Most users enjoy not having to worry about polluting their surroundings or poisoning their pets and kids. As most patio cleaners promise this, it gives the product a retail advantage.

Patio Cleaner Buying FAQs

Q: How to clean paving slabs

A: Use the stiff brush broom to agitate the moss and weed growth or apply a vegetation killer before cleaning the slabs. The latter can take up to two weeks for full results. Then, make a mixture of warm water and patio detergent, apply to the paving slabs in small quantities and scrub the solution gently into the slab surface. Once finished, rinse off the solution with cleaning water, preferably from a garden hose.

You can also use a slab cleaner or a power washer, though the latter is not recommended for constant use.

Q: How to clean a patio without chemicals

A: You can use vinegar to clean your patio. Cleaning patio slabs with vinegar is not complicated; mix in water or use neat and apply with a squirt bottle, then scrub gently after about 20 minutes. You can also spray it off with a power washer.

Baking soda is also useful for cleaning a patio. You can mix with vinegar, make a paste, apply to the stain and scrub off after a few minutes. You can also mix with equal parts of water and salt, spread all over the area, leave for some minutes, then scrub.

You can also use hydrogen peroxide. Put in a spray bottle and apply all over the patio surface, let is set in, then scrub gently and rinse off afterwards.

Q: How to clean a patio

A: This depends on the type of patio surface. For decking, use a leaf blower or a stiff broom to clear up debris. Paving slabs require regular scrubbing or a good patio cleaner. Use a washing solution to wipe cast aluminium surfaces clean. Cast and wrought iron can be cleaned with a good rub down with wire wool. Detergent solutions or a mild bleach solution are suitable for resin while tubular metal can be washed down with warm detergent solution. Hardwood can be wiped over twice a year, usually with oil while softwood should be adequately varnished.

Q: How to clean patio slabs without pressure washer

A: You can make a cleaning solution by mixing water with baking soda, vinegar, patio detergent, or hydrogen peroxide. Apply to the patio slabs with either a mop or a stiff brush broom. After scrubbing gently, rinse off with a garden hose. You can also use a fungicidal wash or bleach. Apply to the surface of the patio and after scrubbing, in the case of bleach, rinse off either one with a garden hose.

Q: How to clean a patio with a pressure washer

A: First, clear the patio of furniture and decorations. Then, apply your selected detergent or pour into the pressure washer- be sure to use protective gear in such cases. Point the pressure washer towards the patio surface and cover in entirety with sweeping motions. Be sure to focus on grimy areas.

Q: Best way to clean a patio

A: First, clear the patio of debris. Then, using a sprayer or a watering can apply a patio cleaning solution to the surface, concentrating more on profoundly affected areas. Then, after waiting for the approved duration, rinse off if required.

Q: Best pressure washer for patio cleaning

A: Currently, the best patio pressure washer is Karcher K7 Premium Full Control plus Home. Close to it is the K4 from the same brand, and STIHL RE 98 comes in third for average users.

Q: What is the best patio cleaner?

A: As far as our analysis is concerned, Wet & Forget- Moss Mould Lichen & Algae Remover is the best patio cleaner on the market. Details of its features are listed in our review above.

Q: How to remove moss from patio

A: Any good moss killer or patio cleaning agent can effectively remove moss from a patio. Just make sure the product is eco-friendly.

Q: Can I use any detergent with Karcher

A: While it may be possible to use any detergent with Karcher, it is usually recommended to use Karcher-compatible washing agents instead.

About the Author Harry Thompson

Hi, I'm the founding guy of Product Spy. Highly experienced in home and garden appliances through years of online research. I want to help everyone in the UK by streamlining their research when buying a new product. I will be putting the hours in researching to find the best products so you don't have to.