The active ingredient in Wet & Forget is Alkyl Dimethyl Benzyl Ammonium Chloride. I think this is the same ingredient that is in many kitchen surface cleaners. This chemical has other names too I believe like benylkonium chloride. Benzalkonium chloride, also known as BZK, BKC, BAC, alkyldimethylbenzylammonium chloride and ADBAC , is a type of cationic surfactant which has antiseptic and anti fungal properties.

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Wet & Forget Mould, Lichen & Algae Remover, Outdoor Patio Cleaner, Black Spot Remover, Bleach Free, 5L

Wet & Forget Mould, Lichen & Algae Remover, Outdoor Patio Cleaner, Black Spot Remover, Bleach Free, 5L

Q: Once moss is killed from between block pavers do you have to sweep up dead debris?

Yes, I would definitely clean any debris away, if you are removing green alge, it just disapearers after a few days

Q: Is it safe to use on patio that cat walks across

Yep my cat and dogs walk on the patio spray on a dry warm day it dries quickly and starts cleaning immediately

Q: We have a bad infestation of lichen on a conservatory roof. Has anyone had good results at removing same?

we have had lots of moss on our patio and on the shed roof and over 6 months it has cleaned the lot but you have to do it when it is dry and then the sun and the rain clears it, it is great no scrubbing just spray it on and leave it

Product ID: 48157194

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Details

Brand
Wet & Forget
Item form
Liquid
Scent
Unscented
Specific uses for product
Outdoor
Material feature
Bleach Free
Item volume
5 Litres

🌿Versatile multi-surface use

💧Highly concentrated formula

🧴Bleach-free & gentle

Description

🌟 Spray it, forget it, flaunt it—your outdoor space’s new best friend!

MAXIMIZED COVERAGE - One 5L bottle yields up to 30L solution, covering up to 300m² of grime-free space.
ALL TERRAIN CLEANER - Perfect for patios, roofs, decking, solar panels, and more—one solution for all your outdoor needs.
SAFE ECO FRIENDLY - Bleach-free, nearly pH-neutral formula protects your surfaces and the environment.
WEATHER WISE APPLICATION - Works best in cloudy, dry conditions with no rinsing—just apply and relax.
EFFORTLESS OUTDOOR RENEWAL - Spray, walk away, and watch your surfaces transform—no scrubbing needed.

Wet & Forget Mould, Lichen & Algae Remover is a powerful, bleach-free outdoor cleaner that requires no scrubbing or rinsing. Its highly concentrated formula covers up to 300m² per application and is safe for a wide range of surfaces including patios, roofs, and solar panels. Designed for easy use in dry, cloudy weather, it offers a hassle-free way to restore and maintain your outdoor spaces with confidence.

Have a Question? See What Others Asked

Active ingredient ?

Once moss is killed from between block pavers do you have to sweep up dead debris?

Is it safe to use on patio that cat walks across

We have a bad infestation of lichen on a conservatory roof. Has anyone had good results at removing same?

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TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago