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Wet & Forget Rapid Action Outdoor Treatment, Moss, Mould & Algae Remover, 5 Litre

Pros

  • Spray and leave — no scrubbing or rinsing needed
  • Bleach-free formula is safe for plants nearby
  • One bottle makes up to 30L of solution

Cons

  • Results take days to weeks to appear

Specifications

Material
Liquid Concentrate
Price tier
Budget

How it compares in Patio & Decking

We list 35 patio & decking products, priced from £7.20 to £949.81. At £20.15 this one is the 5th cheapest of them 30 cost more. The average across the subcategory is £157.59 and the midpoint is £39.66, so it lands £137.44 below the average.

Its 4.5-star score sits 0.17 above the patio & decking average of 4.33, with 2 of the 35 rated higher. Its 2,100 Amazon reviews make it the 2nd most-reviewed here, against a subcategory average of 451.

Price position in Patio & Decking

Cheapest £7.20This one £20.15Dearest £949.81

Splitting the subcategory into three price bands puts this product in the Budget band (£7.24£29.99), which holds 11 of 33 products and averages £20.74 at 4.37 stars.

Average price and rating of each price band in Patio & Decking
BandRangeProductsAverage priceAverage rating
BudgetThis one£7.24£29.9911£20.744.37
Mid-range£32.99£72.3111£48.574.30
Premium£129.95£558.0011£307.634.32

About this product

Blast Patio Pro Rapid Action Outdoor Treatment is a powerful liquid concentrate designed to tackle stubborn mould, mildew, lichen, algae and unsightly watermarks on exterior surfaces. This ready-to-use solution offers a straightforward approach to restoring patios, driveways, rooftops, decking, paths and other outdoor areas back to their original appearance. It’s formulated for homeowners seeking an efficient method of maintaining their gardens and properties, particularly those looking to reduce the time spent on intensive cleaning tasks.

This treatment is designed for use across a variety of surfaces, offering a professional-grade formula that’s non-acidic and biodegradable – making it suitable for areas where plants are nearby. The ‘Spray & Leave’ application method simplifies the process; simply spray the product onto the affected area and allow it to work, eliminating the need for scrubbing or pressure washing.

The concentrate is formulated to break down dirt and grime effectively, targeting everyday dirt build-up and weathering. It helps reduce organic growth and dirt that can cause surfaces to become slippery over time. The formula contains benzalkonium chloride and is suitable for use on a wide range of materials.

Please note that results are typically achieved over days or weeks, requiring patience for the treatment to fully demonstrate its effectiveness. Consider the size of the area you intend to treat when purchasing, as this particular product covers up to 300 square metres.

Related attributes

FAQ

What surfaces can I use Blast Patio Pro on?

This treatment is formulated to effectively tackle mould, mildew and algae growth on various outdoor surfaces including patios, driveways, rooftops, decking, and paths. It's designed for use on a range of materials commonly found in gardens and external spaces.

How much does one bottle actually cover?

The product is supplied as a concentrate and can create up to thirty litres of solution when mixed according to the manufacturer’s instructions, providing coverage for approximately three hundred square metres.

Is this suitable for delicate surfaces like painted wood?

Due to its non-abrasive formula, Blast Patio Pro is generally suitable for a variety of outdoor surfaces. However, it's always recommended to test on an inconspicuous area first to ensure compatibility with the specific material.

What does 'Spray and Leave' actually mean?

The ‘Spray and Leave’ formulation means you simply apply the product and allow it to work undisturbed. The powerful formula will break down dirt and grime without requiring any scrubbing or rinsing processes.

How does this compare to other moss removers around this price point?

Blast Patio Pro distinguishes itself with its non-acidic, biodegradable composition, which is a key difference from some alternative products. It’s designed for ease of use and minimal environmental impact while still delivering effective cleaning.

What are the safety precautions I should take when using this?

Always wear appropriate personal protective equipment such as gloves and eye protection when applying Blast Patio Pro. Avoid spraying directly onto plants or delicate surfaces, and ensure adequate ventilation during use.

How often should I apply this to maintain my patio?

The frequency of application depends on the level of exposure to weather and organic growth. Regular treatments will help reduce buildup, but it's typically recommended to reapply every few weeks for optimal maintenance.

Is there anything I need to do after applying the product?

After allowing sufficient time for the treatment to work – typically several days to a couple of weeks – results should be visible. The product’s action is designed to eliminate surface contaminants, and no rinsing is required.

What is in this product and is it safe for plants?

Blast Patio Pro contains <10% benzalkonium chloride and is formulated to be safe for use near plants due to its non-acidic nature. However, always exercise caution and avoid direct spraying onto foliage.

What does the included component consist of?

The unit count includes a 5000 millilitre bottle of the Wet n Forget Rapid Action Outdoor Treatment, specifically formulated for tackling outdoor mould, mildew, and algae.