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

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

🧪Bleach-free, pH-neutral formula

🧴5L ultra-concentrated solution

🌧️Rain-activated cleaning power

Frequently Bought Together

Wet & Forget Mould, Lichen & Algae Remover, Outdoor Cleaning Solution, Black Mould Remover, Bleach Free, 5 Litre

Spear & Jackson 5LPAPS 5 Litre Pump Action Pressure Sprayer

Description

🌿 Forget the Scrub, Embrace the Glow!

SAFE FOR EVERY SURFACE - Gentle, bleach-free formula works on patios, roofs, solar panels, artificial grass, and more without damage.
LONG LASTING PROTECTION - Residual effect prevents premature recontamination, keeping your outdoor spaces pristine longer.
EFFORTLESS OUTDOOR RENEWAL - Spray once, no scrubbing or rinsing needed—just walk away and watch the magic happen.
WEATHER ACTIVATED CLEANING - Apply in dry, cloudy conditions and let rainfall naturally wash away mould, algae, and lichen.
MAX COVERAGE MINIMAL WASTE - One 5L bottle yields up to 30L of solution, covering 100-300m² of outdoor surfaces.

Wet & Forget Mould, Lichen & Algae Remover is a powerful, bleach-free outdoor cleaner that requires no scrubbing or rinsing. Its highly concentrated 5L formula produces up to 30L of solution, effectively covering large areas and safely removing black spots from a variety of surfaces. Activated by rainfall, it not only cleans but also prevents future growth, making it the ultimate low-effort solution for maintaining pristine outdoor spaces.

Specifications

Product Name	Mould Lichen & Algae Remover
Volume	5000 Millilitres
Units	5000.0 millilitre(s)
Brand	Wet & Forget
Format	Liquid
Country of origin	New Zealand

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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