Wet & Forget Mould, Lichen & Algae Remover, Outdoor Patio Cleaner, Black Spot Remover, Bleach Free, 5L
Reviewed 9 August 2026 · price checked live
Check price on Amazon →Overview
We track Wet & Forget Mould, Lichen & Algae Remover, Outdoor Patio alongside 49 other cleaning supplies products, comparing it on rating, how many people have rated it and what it currently costs. According to the listing: Simply mix 1 part Wet & Forget with 5 parts water, apply to the desired surface, and let it work its magic. No scrubbing, rinsing or jet washing required, just spray and walk away. One bottle produces up to 30 litres of solution, covering a large area of 100-300m². Apply in cloudy, dry conditions for best results, ensuring at least 4-5 hours before any rainfall. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.4 out of 5 from 28,386 ratings. What that score is worth next to its rivals is set out below.
- Brand
- Wet & Forget
- Amazon rating
- 4.4 / 5 from 28,386 ratings
- vs Cleaning Supplies
- 0.2 below the category median of 4.6
- Rank in category
- 48 of 50 rated cleaning supplies we track
- Price position
- Towards the top of the range (category spans £1.00 to £39.67)
- How proven
- Well established, above-average review volume
How it compares in Cleaning Supplies
Across the 50 rated cleaning supplies products we track, the typical score is 4.6 out of 5. This one sits at 4.4, which is in the bottom quarter of the category. That does not make it a bad buy, but there are better-rated alternatives on the same shelf, so it needs another reason to earn your money.
It carries 28,386 ratings against a category median of 4,852. A rating from a large base is harder to distort and tends to hold up over time, so a high score here means more than the same score on a new listing.
On price it sits in the upper third of a category running from £1.00 to £39.67, where the midpoint is about £5.38. Paying above the category norm needs a reason beyond the rating, because the score alone does not justify the gap here.
Worked out from the 50 cleaning supplies products in our catalogue, not from the brand's own claims. How we rank →
Key features
- No Scrubbing Required: Simply mix 1 part Wet & Forget with 5 parts water, apply to the desired surface, and let it work its magic. No scrubbing, rinsing or jet washing required, just spray and walk away
- Highly Concentrated Formula: One bottle produces up to 30 litres of solution, covering a large area of 100-300m². Apply in cloudy, dry conditions for best results, ensuring at least 4-5 hours before any rainfall
- Versatile Application: Perfect for various surfaces, including patios, roofs, bricks, paving, artificial grass, tarmac, decking and more. Whether it's your driveway, headstones, or solar panels, Wet & Forget has you covered
- Softer Solution: Wet & Forget’s gentle, nearly pH-neutral formula is bleach-free making it safe to use on so many different outdoor surfaces
- Confidence in Every Spray: While our formula is gentle, we recommend wearing protective gloves and eye protection during use.
