Wet & Forget Outdoor Cleaner & Stain Remover - Mold, Mildew & Algae, 128oz

If you are tired of the aggressive roar and back-breaking labor of a pressure washer, Wet & Forget is often cited as the "lazy person’s dream" for home maintenance. However, the name is a bit of a double-edged sword: you truly can "forget" the manual labor, but you also have to "forget" about seeing results for a few weeks (or months). How It Works: The "Slow Burn" Strategy Unlike bleach-based cleaners that whiten surfaces instantly through a chemical reaction, Wet & Forget uses a non-caustic, pH-neutral formula (primarily alkyl dimethyl benzyl ammonium chloride). • The Process: You spray the solution on a dry surface. It kills the organic growth (moss, mold, algae) at the root. • The "Worker": Once the organisms are dead, the weather takes over. Rain and wind gently wash away the dead debris over time. The Pros • Zero Scrubbing: This is the biggest selling point. You spray it on and walk away. No rinsing is required. • Surface Safe: Because it contains no bleach or ammonia, it won’t damage your siding, roof shingles, or deck finish. It’s also much safer for surrounding landscaping than harsh caustic cleaners. • Long-Lasting: Once a surface is clean, the residual effect of the product helps prevent regrowth for up to 12–18 months. • Reach: The "Xtreme Reach" hose-end version can spray up to 30 feet, allowing you to treat second-story siding or roofs without ever touching a ladder. The Cons • The Waiting Game: This is not for people prepping for a backyard party tomorrow. Green algae usually disappears in 1–2 weeks, but black mold or thick moss can take 3–6 months to fully clear. • Weather Dependent: You need a dry day for application (at least 4–5 hours of dry time), but then you need subsequent rain to actually wash the stains away. If you live in a drought-prone area, you might have to manually hose it down once a week to see progress. • Not for "Dirt": It only works on organic growth. It will not remove mud, clay, or grease stains. Wet & Forget is an elite product if you are a proactive maintenance-taker. If you apply it every spring as a preventative measure, your house will stay pristine year-round without you ever breaking a sweat. Pro Tip: If your concrete is currently "black" with years of buildup, hit it with a pressure washer once to get a clean slate, then apply Wet & Forget every year after to ensure you never have to pressure wash again.

It sure is better to spray this product than using a power pressure Washer machine. I spray this product for months now, and I haven't seen the green Algae Stain or black moss. I live in the tropical where it rains a lot, therefore moss and algae is more propense to reappear, and this product has been a back saver. The only bad thing I have to say about it, is that its price has gone up since last time I bought it, from about $30.00 to $$44.00+.

We’ve used this produce 4 years ago and just this year we’re needing to reapply it again on our house, RV, camper, both of their parking pads and our driveway. It’s so much better than living out the pressure washer and last a very long time. It definitely cleans moss, algae and baked on pollen. I give this product a 10 out of 10.

Much easier than pressure washing. Sometime reapplication required. Can be a little costly but last longer than pressure washing. Worked well on pool screen. No scrubbing and works well to clean my white pool enclosure from dirt and mold. Also works well on side walks. Used both the premixed and high reach for screen enclosure and concentrate.

Used it on freshly pressure washed wood deckin, got rid of all the residual mildew, left the wood bright and clean-looking.

Best Whitener Made! I use it on my pool patio & lanai floor every year!

Easy to use and very good product! Works as advertised.

Worked well on my house and shed. Didn’t completely remove all the moss but killed the green moss turning it brown. Have not used the product this year because my son who did the spraying claimed he may have had a bad reaction to the product even though he used the mask and gloves during application.

Waste of money and time, not beneficial at all.