--- product_id: 48157194 title: "Mould, Lichen & Algae Remover, Outdoor Surface Cleaner, 5L | Black Spot Remover, Outdoor Cleaner for Patio Slabs & Driveways, Bleach Free, No-Scrub Formula, Cleans & Prevents" brand: "wet & forget" price: "820.54 DT" currency: TND in_stock: true category: "Wet & Forget" url: https://www.desertcart.tn/products/48157194-mould-lichen-and-algae-remover-outdoor-surface-cleaner-5l-black store_origin: TN region: Tunisia --- # Covers 100-300m² versatile surfaces 5L concentrated solution No scrubbing, rain-activated Mould, Lichen & Algae Remover, Outdoor Surface Cleaner, 5L | Black Spot Remover, Outdoor Cleaner for Patio Slabs & Driveways, Bleach Free, No-Scrub Formula, Cleans & Prevents **Brand:** wet & forget **Price:** 820.54 DT **Availability:** ✅ In Stock ## Summary > ✨ Spray, relax, and reclaim your outdoor space effortlessly! 🏡 ## Quick Answers - **What is this?** Mould, Lichen & Algae Remover, Outdoor Surface Cleaner, 5L | Black Spot Remover, Outdoor Cleaner for Patio Slabs & Driveways, Bleach Free, No-Scrub Formula, Cleans & Prevents by wet & forget - **How much does it cost?** 820.54 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/48157194-mould-lichen-and-algae-remover-outdoor-surface-cleaner-5l-black) ## Best For - wet & forget enthusiasts ## Why This Product - Trusted wet & forget brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Mega Coverage Power:** One bottle yields up to 30L of solution, treating up to 300m² of grime. - • **Gentle Yet Effective:** Bleach-free, nearly pH-neutral formula safe on roofs, patios, solar panels & more. - • **Long-Lasting Protection:** Prevents mould, algae & lichen from returning, keeping your outdoor spaces pristine. - • **Rain-Activated Cleaning:** Apply in dry, cloudy weather and let rainfall naturally wash away contaminants. - • **Effortless Outdoor Renewal:** Spray once, forget forever—no scrubbing or rinsing needed. ## Overview Wet & Forget Mould, Lichen & Algae Remover is a powerful 5L concentrated liquid cleaner designed for outdoor surfaces. Its bleach-free, nearly pH-neutral formula requires no scrubbing—just spray and let natural rainfall do the work. Covering up to 300m², it safely cleans patios, roofs, driveways, solar panels, and more, while preventing re-growth of mould and algae for lasting freshness. ## Description Product Description Wet & Forget Mould, Lichen and Algae remover is the outdoor cleaning solution you’ve been looking for. Effectively remove contaminants with no water blasting or scrubbing required – simply apply to the surface and forget about it. Let Wet & Forget do the hard work for you. Our formula has an unlimited shelf life and is completely free from aggressive chemicals such as bleach and ammonia that can damage surfaces. No special equipment is needed for application. This simple approach means it is suitable for anyone to use. It can be used on ANY outdoor surface such as, roofs, bricks, natural stone, pavers, headstones, patios, driveways, paintwork glass houses, solar panels, tarmac, artificial grass and more. Wet & Forget also has a residual effect, the ingredients in the remover work to prevent premature recontamination helping to stop reoccurring mould growth. Ingredients Benzalkonium Chloride P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Directions Directions for Use • Mix one part Wet & Forget to five parts waters. Strength can be increased if contamination is more severe. • Saturate the DRY surface with mixture. We recommend application to be done first thing in the morning or on an evening and where rain is not forecasted in the 4-5 hours after application. • When rainfall begins, it works to wash away the contamination. • In some cases, re-application can be done 1-2 months after for persisting mould. Safety Warning Keep out of reach from children. Wear protective gloves and eye protection. If swallowed, call a poison centre, or seek medical advice. If the product encounters your skin or eyes, rinse thoroughly with water for several minutes. Dispose of contents/container is accordance with local legislation. This material and its container must be disposed of in a safe way. Use biocides safely. Always read the label and product information before use. To avoid risks to man and the environment, comply with the instructions for use. Safety Warning -Causes serious eye irritation. -Causes skin irritation. -Use biocides safely. Always read the label and product information before use. -Active Ingredient: Alkyl (C12-16) dimethylbenzyl ammonium chloride. -Very toxic to aquatic life. Box Contains One 5 Lt Bottle See more ## Features - Causes serious eye damage. - Causes skin irritation. - Use biocides safely. Always read the label and product information before use. - Very toxic to aquatic life with long lasting effects. - 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005IW4GWI | | ASIN | B005IW4GWI | | Best Sellers Rank | 661 in Grocery ( See Top 100 in Grocery ) 2 in Mould Removers | | Brand Name | Wet & Forget | | Contains Liquid Contents? | Yes | | Country of Origin | New Zealand | | Country of origin | New Zealand | | Customer Reviews | 4.4 4.4 out of 5 stars (28,519) | | Customer reviews | 4.4 4.4 out of 5 stars (28,519) | | Guaranteed software updates until | unknown | | Is discontinued by manufacturer | No | | Item Form | Liquid | | Item Type Name | Mould Lichen & Algae Remover | | Item Volume | 5 Litres | | Item Weight | 5229 Grams | | Item model number | WF5 | | Manufacturer | Wet & Forget Ltd | | Manufacturer | Wet & Forget Ltd | | Material Features | Bleach Free | | Material Type Free | Bleach Free | | Model Number | WF5 | | Number of Items | 1 | | Part Number | WF5 | | Product Dimensions | 14 x 18.5 x 29.5 cm; 5.23 kg | | Product Warranty | Use biocides safely. Always read the label and product information before use, Active Ingredient: Benzalkonium Chloride | | Scent | Unscented | | Size | 5 l (Pack of 1) | | Special Features | Biodegradable | | Specific Uses For Product | Outdoor Surfaces | | Surface Recommendation | Floor | | Unit Count | 5000.0 millilitre | ## Product Details - **Brand:** Wet & Forget - **Item form:** Liquid - **Item volume:** 5 Litres - **Material Type Free:** Bleach Free - **Material feature:** Bleach Free - **Scent:** Unscented - **Special feature:** Biodegradable - **Specific uses for product:** Outdoor Surfaces - **Surface recommendation:** Floor - **Unit count:** 5000.0 millilitre ## Images ![Mould, Lichen & Algae Remover, Outdoor Surface Cleaner, 5L | Black Spot Remover, Outdoor Cleaner for Patio Slabs & Driveways, Bleach Free, No-Scrub Formula, Cleans & Prevents - Image 1](https://m.media-amazon.com/images/I/71zpUW2DcaL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Active ingredient ?** A: 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. **Q: Once moss is killed from between block pavers do you have to sweep up dead debris?** A: 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** A: 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?** A: 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 ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/48157194-mould-lichen-and-algae-remover-outdoor-surface-cleaner-5l-black](https://www.desertcart.tn/products/48157194-mould-lichen-and-algae-remover-outdoor-surface-cleaner-5l-black) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-08-21*