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.

Wet & Forget Mould, Lichen & Algae Remover, Outdoor Patio Cleaner, Black Spot Remover, Bleach Free, 5L[Amazon-developed Certification] Compact by Design

Wet & Forget Mould, Lichen & Algae Remover, Outdoor Patio Cleaner, Black Spot Remover, Bleach Free, 5L[Amazon-developed Certification] Compact by Design

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

Secure Transaction

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 gentle solution

💧Highly concentrated 5L formula

🧴Covers up to 300m² per bottle

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

🌟 Spray. Forget. Flaunt your flawless outdoors.

MAXIMIZED COVERAGE - One 5L bottle yields up to 30L of solution, treating expansive areas up to 300m².
ECO FRIENDLY GENTLE - Bleach-free, nearly pH-neutral formula that’s tough on grime but kind to surfaces.
SURFACE SAFE VERSATILITY - Perfect for patios, roofs, decking, solar panels, and more—protect your entire outdoor space.
WEATHER WISE APPLICATION - Apply in cloudy, dry conditions and enjoy long-lasting results without rinsing.
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 in a compact 5L bottle. Its highly concentrated formula covers up to 300m², requiring no scrubbing or rinsing. Safe for multiple surfaces including patios, roofs, and solar panels, it works best when applied in dry, cloudy weather, delivering effortless, long-lasting outdoor surface renewal.

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?

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products