10 Best Spray And Leave Patio Cleaner Concentrate in The UK

Last updated on 27/08/2025

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Best Choice

9.8

Exceptional

Jarder

Jarder Spray & Leave 4 x 5 Litre Concentrate Cleaner - Patio Fencing Decking - Green Mould & Algae Killer (20L)

Why We Love It

Effortless and effective cleaning.
Prevents mould regrowth.
Safe for kids, pets.

Main Highlights

✓ CLEANS WITH NO EFFORT: Jarder Spray And Leave Kills All Green Mould & Algae With Ease, Without The Need For Scrubbing Or Pressure Washing! Simply Mix, Spray & Walk Away - Works Like Magic!
✓ SUPER CONCENTRATE: One 5 Litre Bottle Of Jarder Spray & Leave Makes A Minimum Of 30 Litres Of Solution Covering A Huge 240m² Area - Jarder Spray & Leave Is a Maximum Strength Super Concentrate Boasting 50% More Active Ingredient Than Other Brands!
✓ ALL HARD SURFACES: Perfect For Use On Patios, Decking, Fencing, Paths, Driveways, Roofs, Sheds, Greenhouses, Garden Statues, Terracotta Pots, UPVC Windows, Boats, Caravans, Motor Homes And All Indoor & Outdoor Hard Surfaces Affected By Green Mould and Algae.
✓ PREVENTS REGROWTH: Once Treated Results Will Show In 2-3 Days. Spray & Leave Penetrates Your Outdoor Surfaces Creating An Invisible Barrier Which Will Help To Prevent Re-Growth For Up To Six Months!
✓ SAFE & GUARANTEED RESULTS: Biodegradable PH8; Non-Caustic, No Acid & No Bleach! Jarder Spray & Leave Is Safe For Children & Pets Once The Area Is Dried. Prepare To Be Amazed!

Spear and Jackson - Spray and Leave Concentrate 2 x 5 Litres - Kills Mould, Algae & Lichen From All Exterior Surfaces

3% Off

Why We Love It

Versatile surface compatibility.
Prevents future algae growth.
Safe for household use.

Main Highlights

CONCENTRATED MOULD SPRAY: The Spear and Jackson Spray And Leave for the removal of mould, algae and lichen is suitable for a range of different surfaces such as patios, roofs, fencing, upvc windows, sheds, caravans, boats, decking and driveways. Within this bottle, you'll receive 5 litres of mould remover spray that, when diluted, makes up 25 litres of products, simply spray and walk away!
MOULD, LICHEN & ALGAE REMOVER: This product doesn't just act as a lichen, algae and mould remover - once the substance has been removed from your desired surface, the product will also work to repel any future dirt and inhibits algae and lichen from growing, leaving your surface as good as new, just wet & forget it!
CLEANING SUPPLIES: A patio magic cleaner, Spear and Jackson's algae, lichen and mould killer is formulated with active ingredients designed to counteract and prevent growth. The benefit of using this formula is its efficacy during all weather conditions. For every time it rains, the formula is reactivated to help control the gunge and grime without scouring or damaging the surface that has been infested
GOOD FOR MOULD PREVENTION: The packaging of Spear and Jackson's spray and leave algae, lichen and mould remover is 100% biodegradable. It's also safe for children and pets when it's dry, so treated around don't have to be corner off. To use, simply spray on with a low pressure garden sprayer or watering can. To create the solution, mix 1 litre of product with 4 litres of water and you'll be ready to go
SPEAR & JACKSON: With over 250 years experience and continuous innovation, Spear and Jackson have built an enviable reputation with their market leading products that offer high quality performance tools to suit a wide range of needs. Whether you're looking to unblock your sink drain or a concentrated mould, algae and moss spray then shop Spear and Jackson range of versatile, effective and long lasting household cleaning products

Spear & Jackson 5L Spray and Leave Concentrate - 5L Garden Sprayer, Mould, Algae and Lichen Remover 5 Litre

Why We Love It

Effective on various surfaces.
Prevents future mould growth.
Biodegradable and pet-safe formula.

Main Highlights

CONCENTRATED MOULD SPRAY: The Spear and Jackson Spray And Leave for the removal of mould, algae and lichen is suitable for a range of different surfaces such as patios, roofs, fencing, upvc windows, sheds, caravans, boats, decking and driveways. Within this bottle, you'll receive 5 litres of mould remover spray that, when diluted, makes up 25 litres of products
MOULD, LICHEN & ALGAE REMOVER: This product doesn't just act as a lichen, algae and mould remover - once the substance has been removed from your desired surface, the product will also work to repel any future dirt and inhibits algae and lichen from growing, leaving your surface as good as new
CLEANING SUPPLIES: Spear and Jackson's algae, lichen and moss killer is formulated with active ingredients designed to counteract and prevent growth. The benefit of using this formula is its efficacy during all weather conditions. For every time it rains, the formula is reactivated to help control the gunge and grime without scouring or damaging the surface that has been infested
GOOD FOR MOULD PREVENTION: The packaging of Spear and Jackson's spray and leave algae, lichen and mould remover is 100% biodegradable. It's also safe for children and pets when it's dry, so treated around don't have to be corner off. To use, simply spray on with a low pressure garden sprayer or watering can. To create the solution, mix 1 litre of product with 4 litres of water and you'll be ready to go
GARDEN PRESSURE SPRAYER: Pressure cleaner featuring: 560mm watering wand/lance, a 1.3m portable hose perfect to use when reaching difficult and inaccessible places, a fully adjustable wand nozzle to adjust the pressure spray from spray to mist, a lockable trigger mechanism, water flow regulator and pressure release valve

Versatile outdoor space cleaner.
Effortless application, long-lasting effects.
Eco-friendly and safe.

Main Highlights

𝗟𝗼𝗻𝗴 - 𝘁𝗲𝗿𝗺 𝗲𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲𝗻𝗲𝘀𝘀: Weather: activated algae remover that targets green algae, moss, lichen, and mould on patios, decking, tarmac, fences, concrete paths, and roof tiles. Rain: released for root - level cleaning.
𝗔𝗹𝗹 𝘀𝗲𝗮𝘀𝗼𝗻 𝗽𝗮𝘁𝗶𝗼 𝗰𝗹𝗲𝗮𝗻𝗲𝗿 & 𝗺𝗼𝘀𝘀 𝗸𝗶𝗹𝗹𝗲𝗿: Removes unwanted green growth, and mildew from balconies, brickwork, porcelain paving, resin drives, and paving slabs. A trusted alternative to pressure washing.
𝗢𝘂𝘁𝗽𝗲𝗿𝗳𝗼𝗿𝗺𝘀 𝗯𝗹𝗲𝗮𝗰𝗵 - 𝗯𝗮𝘀𝗲𝗱 𝘀𝗽𝗿𝗮𝘆𝘀: GLEAN removes green mould, moss, and lichen from natural stone walls, paving edges, and steps. No surface bleaching—just lasting results, no rinse.
𝗦𝗮𝗳𝗲 𝗼𝗻𝗰𝗲 𝗱𝗿𝘆 𝗳𝗼𝗿 𝗴𝗮𝗿𝗱𝗲𝗻𝘀 & 𝗽𝗲𝘁𝘀: Confidently spray around lawns, plants, and outdoor furniture. Apply using a garden sprayer, watering can, or trigger bottle - zero harsh runoff.
𝟱𝗟 𝗰𝗼𝗻𝗰𝗲𝗻𝘁𝗿𝗮𝘁𝗲 𝗳𝗼𝗿 𝗳𝘂𝗹𝗹 𝗼𝘂𝘁𝗱𝗼𝗼𝗿 𝗮𝗿𝗲𝗮𝘀: Dilute 1:5 to cover up to 200m². Use on paving slabs, render, composite decking, natural stone, brick paths, and driveways. Compatible with all sprayers.
𝗧𝗿𝘂𝘀𝘁𝗲𝗱 𝗕𝗿𝗮𝗻𝗱 – 𝗣𝗿𝗼𝗳𝗲𝘀𝘀𝗶𝗼𝗻𝗮𝗹 𝗾𝘂𝗮𝗹𝗶𝘁𝘆, 𝗗𝗜𝗬 - 𝗳𝗿𝗶𝗲𝗻𝗱𝗹𝘆: GLEAN is a UK brand leading in outdoor surface cleaners may it be wood, stone, brick, decking, tile maintenance, used by homeowners, gardeners, and tradespeople.

Spear & Jackson Spray and Leave Concentrated Mould, Algae and Lichen Remover 3 x 5 Litres

Why We Love It

Effective mould and algae removal.
Safe for children and pets.
Biodegradable and environmentally friendly.

Main Highlights

CONCENTRATED MOULD SPRAY: The Spear and Jackson Spray And Leave for the removal of mould, algae and lichen is suitable for a range of different surfaces such as patios, roofs, fencing, upvc windows, sheds, caravans, boats, decking and driveways. Within this bottle, you'll receive 5 litres of mould remover spray that, when diluted, makes up 25 litres of products
MOULD, LICHEN & ALGAE REMOVER: This product doesn't just act as a lichen, algae and mould remover - once the substance has been removed from your desired surface, the product will also work to repel any future dirt and inhibits algae and lichen from growing, leaving your surface as good as new
CLEANING SUPPLIES: Spear and Jackson's algae, lichen and moss killer is formulated with active ingredients designed to counteract and prevent growth. The benefit of using this formula is its efficacy during all weather conditions. For every time it rains, the formula is reactivated to help control the gunge and grime without scouring or damaging the surface that has been infested
GOOD FOR MOULD PREVENTION: The packaging of Spear and Jackson's spray and leave algae, lichen and mould remover is 100% biodegradable. It's also safe for children and pets when it's dry, so treated around don't have to be corner off. To use, simply spray on with a low pressure garden sprayer or watering can. To create the solution, mix 1 litre of product with 4 litres of water and you'll be ready to go
SPEAR & JACKSON: With over 250 years experience and continuous innovation, Spear and Jackson have built an enviable reputation with their market leading products that offer high quality performance tools to suit a wide range of needs. Whether you're looking to unblock your sink drain or a concentrated mould, algae and moss spray then shop Spear and Jackson range of versatile, effective and long lasting household cleaning products

5 Litre Concentrate Spray & Leave Cleaner - Patio Fencing Decking - Green Mould & Algae Killer

Free Shipping

Why We Love It

Effortless and powerful cleaning.
Prevents regrowth effectively.
Super concentrated and economical.

Main Highlights

✓ CLEANS WITH NO EFFORT: Jarder Spray And Leave Kills All Green Mould, Algae & Lichen With Ease, Without The Need For Scrubbing Or Pressure Washing! Simply Mix, Spray & Walk Away - Works Like Magic!
✓ SUPER CONCENTRATE: One 5 Litre Bottle Of Jarder Spray & Leave Makes A Minimum Of 30 Litres Of Solution Covering A Huge 240m² Area - Jarder Spray & Leave Is a Maximum Strength Super Concentrate Boasting 50% More Active Ingredient Than Other Brands!
✓ ALL HARD SURFACES: Perfect For Use On Patios, Decking, Fencing, Paths, Driveways, Roofs, Sheds, Greenhouses, Garden Statues, Terracotta Pots, UPVC Windows, Boats, Caravans, Motor Homes And All Indoor & Outdoor Hard Surfaces Affected By Green Mould and Algae.
✓ PREVENTS REGROWTH: Once Treated Results Will Show In 2-3 Days. Spray & Leave Penetrates Your Outdoor Surfaces Creating An Invisible Barrier Which Will Help To Prevent Re-Growth For Up To Six Months!
✓ SAFE & GUARANTEED RESULTS: Biodegradable PH8; Non-Caustic, No Acid & No Bleach! Jarder Spray & Leave Is Safe For Children & Pets Once The Area Is Dried. Prepare To Be Amazed!

Jarder 2 x 5 Litre Concentrate Spray & Leave Cleaner - Patio Fencing Decking - Green Mould & Algae Killer

Why We Love It

Effortless cleaning with no scrubbing.
Super concentrate covers large areas.
Prevents regrowth for months.

Main Highlights

✓ CLEANS WITH NO EFFORT: Jarder Spray And Leave Kills All Green Mould & Algae With Ease, Without The Need For Scrubbing Or Pressure Washing! Simply Mix, Spray & Walk Away - Works Like Magic!
✓ SUPER CONCENTRATE: One 5 Litre Bottle Of Jarder Spray & Leave Makes A Minimum Of 30 Litres Of Solution Covering A Huge 240m² Area - Jarder Spray & Leave Is a Maximum Strength Super Concentrate Boasting 50% More Active Ingredient Than Other Brands!
✓ ALL HARD SURFACES: Perfect For Use On Patios, Decking, Fencing, Paths, Driveways, Roofs, Sheds, Greenhouses, Garden Statues, Terracotta Pots, UPVC Windows, Boats, Caravans, Motor Homes And All Indoor & Outdoor Hard Surfaces Affected By Green Mould and Algae.
✓ PREVENTS REGROWTH: Once Treated Results Will Show In 2-3 Days. Spray & Leave Penetrates Your Outdoor Surfaces Creating An Invisible Barrier Which Will Help To Prevent Re-Growth For Up To Six Months!
✓ SAFE & GUARANTEED RESULTS: Biodegradable PH8; Non-Caustic, No Acid & No Bleach! Jarder Spray & Leave Is Safe For Children & Pets Once The Area Is Dried. Prepare To Be Amazed!

Patio Cleaner Concentrate Makes 30L - Removes Green Staining - Great for Patios and Decking, Driveways and Roofs - Green Growth Remover (500 ml)

Free Shipping

Why We Love It

Removes moss and stains.
Safe for pets.
No scrubbing needed.

Main Highlights

REMOVES GREEN STAINING: Our Green Growth Remover will get rid of green staining from all exterior surfaces. It also prevents regrowth.
MAKES 30 LITRES: Both 500ml and 5L bottles dilute with water to make 30 litres and will cover 125m².
SPRAY ON AND LEAVE TO WORK: Once diluted, simply spray on, and walk away. The green stain will disappear within five days. No scrubbing or pressure washing required.
USE ON MULTIPLE OUTDOOR SURFACES: Use to clean and restore the appearance of all hard surfaces including decking, fences, patios, paths, tarmac, roofs, walls, stone garden pots and ornaments, uPVC windows and greenhouses.
BIODEGRADABLE: Green Growth Remover is safe to use around children, pets and wildlife. The formula is water-based and contains no bleach or acid.

Dunnet Tools 10L Spray And Leave Patio Cleaner Concentrate Moss Killer For Paths And Drives Patio Cleaner Pet Friendly For Patios Decking Fence Driveways Roofs & Block Paving

Why We Love It

Effective wet and walk away.
Safe for all outdoor surfaces.
Eco-friendly and pet-friendly formula.

Main Highlights

Patio Cleaner Spray And Leave - This Decking Cleaner Is The Perfect Cleaning Solution For Outdoor Use. Simply Wet And Walk Away. Our Premium Formula With Its Special Active Ingredient Safely And Effectively Removes Green Staining With Ease.
Moss Control Driveway Cleaner - Use On A Multitude Of Surfaces Such As Patios, Fencing, Driveways, Roofs, Gutters, Artificial Grass, Caravans And Much More. As Wet And Walk Away Requires No Agitation You Can Be Sure That No Damage Will Be Caused In The Cleaning Process.
Algae Remover Patio - Our Black Spot Remover Patio Cleaner Has No Bleach And No Acids, Yet This Ph Neutral Formula Has A Special Active Ingredient That Will Safely And Effectively Rid Your Patios, Fencing, Driveways And Most Outdoor Hard Surfaces Of All Unwanted Moss, Mould And Algae.
Pet Friendly Patio Cleaner - Just Add The path cleaner To The Detergent Tank And Your Washer Will Automatically Mix With Water Upon Application. Once A Generous Layer Has Been Applied Simply Walk Away!
Eco Friendly Patio Cleaner - You Will Start To Notice Results In 2-3 Days And The Moss Remover Will Continue Working For Months Helping To Control Any Re-growth That May Occur On Your Pathways.

EasyCare - Patio Snow Foam Cleaner 1L Concentrate. Multipurpose Hard Surface Cleaner For Patio, Garden Furniture, Garden Fence, Paths And More. Floral Scented Acid-free Formula, Easy To Use

Why We Love It

Easy to use cleaner.
Controls algae growth effectively.
Covers up to 45m2.

Main Highlights

FOAM PATIO CLEANER: This easy to use multi purpose cleaner for outdoor garden areas is a special formula that once diluted with water turns into a cleaning foam. It can be applied to any hard surfaces in your garden with a spray or watering can to help break down dirt making cleaning easier. It also helps control algae growth!
SUITABLE FOR: Our patio cleaner fluid can be used on any outdoor hard surface including patio, paving slabs, driveway, wooden garden furniture, fence panels, decking and more, making it ideal all purpose cleaner for your garden. Our 1L super concentrate formula covers up to 45m2.
HOW TO USE: First, shake the bottle well and dilute with water depending on contamination. Then, apply liberally to dry surface using watering can or spray. For best results use power washer with spray attachment. Leave to work for 15-60min and then use firm bristle brush to agitate the surface and rinse with clean water
EASYCARE: Our EASYCare range consist of modern high grade cleaning products which use leading edge technology, while being easy to use by anyone without special cleaning supplies and equipment needed
ABOUT US: At Azpects Ltd, we specialise in developing and manufacturing products to create and maintain outdoor hard-landscaping. Our mission is to deliver products that make typical construction and care challenges EASY and less frequent

8.7

Excellent

We scanned 1395 products

We reviewed these offers relevant to the Spray And Leave Patio Cleaner Concentrate within online retailers such as Amazon, eBay and other local retailers, ensuring we covered all major brands and models. The products we selected come from trusted brands like Jarder, Spear & Jackson, GLEAN, Furniture Clinic, Dunnet Tools, Azpects, all of which have a reputation for consistently delivering high-quality products that users love and innovative approaches for function & design.

For the best Spray And Leave Patio Cleaner Concentrate in the market, we considered we took a deep dive into 6976 online reviews , focusing on elements like user satisfaction, performance in real-world conditions, and long-term reliability. Our ranking also evaluates each review’s relevancy, authenticity, up-to-dateness and depth so that the comparison is more sound.

We concluded that:

The clear winner of our analysis is Jarder Spray & Leave 4 x 5 Litre Concentrate Cleaner - Patio Fencing Decking - Green Mould & Algae Killer (20L). We love many things about this product by Jarder. What sets it apart from the competition is Effortless and effective cleaning, Prevents mould regrowth, Safe for kids, pets.
The best value product for most shoppers and where user satisfaction is continuously the highest is Spear and Jackson - Spray and Leave Concentrate 2 x 5 Litres - Kills Mould, Algae & Lichen From All Exterior Surfaces by Spear & Jackson based on online reviews by bloggers, experts and online shoppers.
The biggest bargain at the moment for Spray And Leave Patio Cleaner Concentrate and the best cost-to-value ratio is Spear and Jackson - Spray and Leave Concentrate 2 x 5 Litres - Kills Mould, Algae & Lichen From All Exterior Surfacesat Spear & Jackson with a 3% discount.
Our list of the best Spray And Leave Patio Cleaner Concentrate is updated regularly to reflect new releases and changes in product availability, so be sure to check back often for the latest rankings and discounts.

10 Best Spray And Leave Patio Cleaner Concentrate in The UK

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We scanned 1395 products

We concluded that: