---
product_id: 686036469
title: "Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces"
brand: "wet & forget"
price: "R1676"
currency: ZAR
in_stock: true
reviews_count: 8
category: "Wet & Forget"
url: https://www.desertcart.co.za/products/686036469-moss-mold-mildew-and-algae-stain-remover-multi-surface-outdoor
store_origin: ZA
region: South Africa
---

# Results in 1-12 months, lasting 1+ year No scrubbing, rinsing, or pressure washing 128 fl oz concentrate Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces

**Brand:** wet & forget
**Price:** R1676
**Availability:** ✅ In Stock

## Summary

> 🌿 Transform your outdoors with zero effort—just Wet & Forget and enjoy the glow!

## Quick Answers

- **What is this?** Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces by wet & forget
- **How much does it cost?** R1676 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/686036469-moss-mold-mildew-and-algae-stain-remover-multi-surface-outdoor)

## 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

- • **Long-Lasting Clean:** Keeps surfaces stain-free for up to a year, reducing maintenance frequency.
- • **Customizable Concentrate:** Mix 1:5 with water for tailored coverage—up to 2,250 sq. ft. per batch.
- • **Versatile Surface Savior:** Safe and effective on concrete, wood, vinyl, aluminum, and more.
- • **Effortless Outdoor Renewal:** Just spray, wet it, and forget it—no scrubbing or rinsing needed.
- • **Eco-Friendly & Fragrance-Free:** Gentle on your environment and free from harsh bleach or scents.

## Overview

Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover is a powerful 128 fl oz concentrate designed for multi-surface outdoor cleaning. It eliminates stubborn green and black stains without scrubbing, rinsing, or pressure washing. Simply dilute, spray on dry surfaces, and let natural rain and wind do the work. Visible results appear within weeks to months, with effects lasting over a year. Safe for a wide range of materials including concrete, wood, vinyl, and aluminum, this fragrance-free formula offers an eco-friendly, low-maintenance solution for professional-grade outdoor restoration.

## Description

Wet & Forget is an outdoor cleaner that eliminates black and green stains caused by moss, mold, mildew and algae without any scrubbing, power washing or bleach. Just mix 5 parts water with 1 part Wet & Forget in a pump up garden sprayer. Fully saturate a dry surface with Wet & Forget on a cool dry day and leave it. That’s it! Just wet it and forget it. Wet & Forget goes to work with the wind and rain to gently clean the surface. Green stains generally clean up within a few weeks, a few days with rainfall. Black stains or heavy stubborn stains may take 6-12 months to fully clean up. Be Patient! Wet & Forget properly cleans surfaces, so they are likely to stay clean up to 1 year or longer. Repeat application yearly or when new stains appear to maintain a clean surface. Wet & Forget contains no bleach and is safe to use on any outdoor surface including any type of deck, siding, roof, walkway, patio, brick, and cement. Gallon Concentrate makes 6-Gallons and covers 750 - 2,250 sq. ft. depending upon severity of the stain and porosity of the surface. Wet & Forget - the easy way to clean all your outdoor surfaces

Review: Works wonders on concrete! - This WnF is soooo great. A friend told me that the darkening of concrete over time is usually tiny black mold. WnF attacks that and brings your concrete bright again! Take before photos, apply, and then be patient. In 2-4 weeks you will see the result is bright white sidewalks and driveway, and very long-lasting. I regret pressure-washing my former driveway, as it removed small amounts of the surface; accelerating the concrete aging. However, WnF is not only easier, it lasts far longer than pressure-washing without removing parts of the surface. Because you need to wait weeks to see the result it is not as gratifying when applying. But know that it works; take before and after photos —or— test on one “square” of your sidewalk first. After a few weeks, that will be brighter than the adjacent squares. If you have green active growth on your stonework or shaded areas. You may notice it turn orange as the enzymes begin working. Any thick growth may later require removal, but WnF increases the length of time before growth returns. Usually several years in my experience. I use it on my concrete driveway, sidewalks, brick + mortar, and even the shaded side of my kids’ wooden playset roof. I used it on the padded portions of my boat trailer to make it look brand new, also. I am not an expert on what surfaces to avoid, but I avoid plants + grass and I allow to dry before my pets walk on it. Definitely purchase the concentrate and determine your own dilution. When I have tried the gardenhose-end variant of this WnF product, it appears less-effective. Always apply early morning or late evening so it can maximize before the sun evaporates. Also apply when you don’t think it will rain for 24 hours (turn off your sprinkler system for a day, if you have one). I hope that helps! I cannot say enough about how great this stuff works!
Review: Great product! - This stuff works! I love it! The mildew is gone after a few days!

## Features

- Wet & Forget Concentrate Outdoor Cleaner removes green and black stains caused by moss, mold, mildew, and algae, no scrubbing, no rinsing, no pressure washing, just wet it and forget
- Surfaces including driveway, patio, roof, siding, deck, vinyl, wood, concrete, canvas, aluminum, and upholstery
- Mix 1 part Wet & Forget with 5 parts water in a garden sprayer, spray dry surface on a cool day to avoid rapid evaporation of product, do not rinse, apply when rain is not forecasted within 4-5 hours
- Apply when the temperature is above 32° F; unused product can be stored mixed and ready in sprayer for future applications
- Cleans with the wind and rain, green stains clean up within 1-2 weeks, black stains or heavy, stubborn stains can take several months, long-established stains may take 6-12 months; surfaces can stay clean up to 1 year or longer

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Wet & Forget |
| Item Form | Liquid |
| Item Volume | 128 Fluid Ounces |
| Material Feature | Fragrance Free |
| Scent | Unscented |
| Specific Uses For Product | Concrete, Deck, Roof, Siding, Wood |

## Product Details

- **Brand:** Wet & Forget
- **Item Form:** Liquid
- **Scent:** Unscented
- **Specific Uses For Product:** Concrete, Deck, Roof, Siding, Wood
- **Material Feature:** Fragrance Free

## Images

![Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces - Image 1](https://m.media-amazon.com/images/I/513IEVJtoeL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works wonders on concrete!
*by A***R on November 10, 2025*

This WnF is soooo great. A friend told me that the darkening of concrete over time is usually tiny black mold. WnF attacks that and brings your concrete bright again! Take before photos, apply, and then be patient. In 2-4 weeks you will see the result is bright white sidewalks and driveway, and very long-lasting. I regret pressure-washing my former driveway, as it removed small amounts of the surface; accelerating the concrete aging. However, WnF is not only easier, it lasts far longer than pressure-washing without removing parts of the surface. Because you need to wait weeks to see the result it is not as gratifying when applying. But know that it works; take before and after photos —or— test on one “square” of your sidewalk first. After a few weeks, that will be brighter than the adjacent squares. If you have green active growth on your stonework or shaded areas. You may notice it turn orange as the enzymes begin working. Any thick growth may later require removal, but WnF increases the length of time before growth returns. Usually several years in my experience. I use it on my concrete driveway, sidewalks, brick + mortar, and even the shaded side of my kids’ wooden playset roof. I used it on the padded portions of my boat trailer to make it look brand new, also. I am not an expert on what surfaces to avoid, but I avoid plants + grass and I allow to dry before my pets walk on it. Definitely purchase the concentrate and determine your own dilution. When I have tried the gardenhose-end variant of this WnF product, it appears less-effective. Always apply early morning or late evening so it can maximize before the sun evaporates. Also apply when you don’t think it will rain for 24 hours (turn off your sprinkler system for a day, if you have one). I hope that helps! I cannot say enough about how great this stuff works!

### ⭐⭐⭐⭐⭐ Great product!
*by E***K on January 17, 2026*

This stuff works! I love it! The mildew is gone after a few days!

### ⭐⭐⭐⭐⭐ Effective, easy application. Patience while waiting for great results to appear is a must.
*by M***Y on June 1, 2025*

I have been using this product for years. As long as you understand that it does not offer immediate results, you will not be disappointed. Yes, wet AND FORGET. Come back in a couple of weeks or so, and provided that it has been properly applied with time to dry (5 hrs) before a rainfall, and there have been some periods of modest rainfall in the days/weeks following the application (or you return to spray with clean water), the surface will be clear of green, black and other colorful mildew and algae growth. I have used this product on wood of all kinds (PT, painted or untreated), cement, masonry, aluminum and fiberglass surfaces, all with very good to excellent results. It has not harmed any of my extensive landscaping vegetation. I use it with a long-distance garden hose sprayer to cover my entire tile roof in FL, as I stand on a ladder at the edge of the roof. I have been doing this for years with great results. It can be expensive, but when you consider the labor involved with using alternative methods (pressure washing) I think it is worth every penny.

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-19*