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Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces

4.4 4.4 out of 5 stars 9,591 ratings

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128 Fluid Ounces
Remover

Purchase options and add-ons

Brand Wet & Forget
Item Weight 8.3 Pounds
Liquid Volume 128 Fluid Ounces
Item Form Liquid
Coverage 750 - 2,250 square feet

About this item

  • 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 it on multiple 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 with unlimited shelf life
  • Cleans over time 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
  • It is bleach free and non-acidic; spray 100 feet away from lakes, ponds, rivers, and streams and flush plants with water before and after application
  • One bottle treats 750 - 2,250 square feet, heavy stained and porous surfaces will absorb more product

Frequently bought together

$32.93 ($0.26/Fl Oz)
Get it as soon as Monday, Apr 1
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From the manufacturer

wet and forget outdoor
wet and forget concentrate

FEATURES

Any Surface

Coverage

no power washing

No scrubbing

Use Wet And Forget To Clean

fence

Deck

stone

stone

Hose End Hose Refill concentrate Concentrate Ready To Use
BUY BUY BUY BUY BUY
Customer Reviews
4.0 out of 5 stars
41
4.4 out of 5 stars
895
4.3 out of 5 stars
5,420
4.4 out of 5 stars
9,591
4.0 out of 5 stars
12,732
Application Method Hose Refill for Hose End Pump Sprayer Pump Sprayer Trigger Sprayer
Coverage Covers up to 2,000 sq ft Covers up to 2,000 sq ft Covers 375 - 1,125 sq ft Covers 750 - 2,250 sq ft Covers 60 - 180 sq ft
Where to use Safe for use on virtually any outdoor surface Safe for use on virtually any outdoor surface Safe for use on virtually any outdoor surface Safe for use on virtually any outdoor surface Safe for use on virtually any outdoor surface
What to expect Green stains clean up within 1-2 weeks, black stains or heavy, stubborn stains can take several months. Green stains clean up within 1-2 weeks, black stains or heavy, stubborn stains can take several months. Green stains clean up within 1-2 weeks, black stains or heavy, stubborn stains can take several months. Green stains clean up within 1-2 weeks, black stains or heavy, stubborn stains can take several months. Green stains clean up within 1-2 weeks, black stains or heavy, stubborn stains can take several months.

Product 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 over time. 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, Good Things Take Time! 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

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ Yes
  • Product Dimensions ‏ : ‎ 6.25 x 4.5 x 10.5 inches; 8.35 Pounds
  • Item model number ‏ : ‎ E800006
  • Department ‏ : ‎ Unisex-Adult
  • Material Feature ‏ : ‎ Biodegradable Warning
  • Date First Available ‏ : ‎ November 1, 2007
  • Manufacturer ‏ : ‎ Wet and Forget
  • ASIN ‏ : ‎ B0019KSUG6
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.4 4.4 out of 5 stars 9,591 ratings

Product guides and documents

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Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces
Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces
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Price-45% $32.93
List:$59.99
$58.60$18.98$29.17-36% $11.91
List:$18.64
Delivery
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Get it as soon as Monday, Apr 1
Customer Ratings
Easy to use
4.4
4.1
3.4
4.1
Value for money
3.9
3.8
2.5
3.7
Sold By
Amazon.com
Amazon.com
Amazon.com
Amazon.com
Amazon.com
liquid volume
128 fluid ounces
48 fluid ounces
27 fluid ounces
1 gallons
32 fluid ounces
coverage
750 - 2,250 square feet
Up to 2,000 sq. ft.
2000 square feet
form
Liquid
Liquid
Spray
Liquid
Spray
weight
8.35 pounds
28.8 ounces
2.3 pounds

Important information

Ingredients

Alkyl dimethyl benzyl ammonium chloride

Legal Disclaimer

Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition.

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
9,591 global ratings

Customers say

Customers like the performance, ease of cleaning, and appearance of the outdoor living product. For example, they mention that it works great, it doesn't smell bad, and it makes things look new again. That said, opinions are mixed on toxicness, value, quality, and moss removal.

AI-generated from the text of customer reviews

1,081 customers mention815 positive266 negative

Customers like the performance of the product. They say it works great, within a day or two, and removes green algae from brick and concrete. Some customers also mention that the product works slowly over a year, but it's still an excellent product that works great on exterior brick surfaces.

"I have only used this once so far and the results are pretty amazing! It’s really is wet it and forget it...." Read more

"...No more scrubbing & hosing on a wet slippery metal roof. This stuff really works but you just have to give it time. Thanks for a great product." Read more

"...+ Work great on exterior brick surfaces, like chimneys.+ Advertised - 1 gallon concentrate makes 6 gallons of ready to use product...." Read more

"...and still, no real improvement...." Read more

281 customers mention206 positive75 negative

Customers like the ease of cleaning with the product. They say it does not smell bad, does not require scrubbing, and is pet friendly. Customers also say that it cleans moss and mildew from paver landscape walls, keeps fences clean, and allows mold grime to wash off with water. It really does get rid of green and black stains caused by algae mildewing mosses. Customers say it's great for cleaning tombstones, acorns, and driveways.

"...+ Advertised - EPA approved one step process that requires no scrubbing or rinsing.+ Advertised - safe around plants...." Read more

"...It works. It keeps fences clean even after 2 years of application. It doesnt seem to attract as much moss, lichen mold etc...." Read more

"...What I will say is that when applied correctly, this has allowed us to skip every other wash...." Read more

"...It is a corrosive, so don't spray it when the wind will blow it back in your eyes or on your skin. Don't let pets on it unless it is dry...." Read more

214 customers mention205 positive9 negative

Customers find the product very easy to apply and mix. They also appreciate the incredibly simple mixing and spraying instructions. Customers say it takes 15 minutes to spray on.

"...I already had an applicator so it was very easy to apply. Results are still improving. Love this." Read more

"...The pros:+ VERY easy to apply with a spray bottle or pump sprayer.+ Work great on exterior brick surfaces, like chimneys...." Read more

"If you have a decent sprayer, this is easy to apply. It works too!" Read more

"...Bought some, easy to mix, easy to put on (used pump sprayer) the siding...." Read more

100 customers mention82 positive18 negative

Customers like the appearance of the product. They mention that it has a new, freshly laid look, and makes the back of the house look brand new. They say it's fairly easy to maintain that clean look, with a beautifully natural creamy white surface. Customers also mention that the stones now look like new, and the deck is pristine. They also say the effect on the siding was amazing, and they didn't notice any discoloration on any grass.

"...It sounds too good to be true, but I'd hate to miss out on a possible good product! :)The pros:..." Read more

"...was almost black, before application, however, now it has a newly laid look...." Read more

"...To my surprise it came out looking brand new! Definitely my new favorite product." Read more

"...it finally does work (a few months later) t it is fairly easy to maintain that clean look if you it apply this stuff regularly -- once a year or so." Read more

204 customers mention118 positive86 negative

Customers are mixed about the value of the product. Some mention that it's worth every penny, while others say that it was a very expensive way to kill the moss.

"...Great product, works well, great value, not very well thought out on application." Read more

"...▪ This product is on the expensive side, so I shop around when I need more. The last 2 gallons I purchased cost me $24.97 a gallon at the Home Depot...." Read more

"...Using this product has saved me time and has kept me off the ladder. It is a great product!" Read more

"...The product is a little pricey, but worth it! I highly recommend it!" Read more

190 customers mention106 positive84 negative

Customers are mixed about the moss removal. Some say that it gets rid of the Moss and algae and hasn't come back in 3 months. However, others say that by the second year, mosses and mildew covered the entire area and it looked horrible.

"...I got up on our roof and the green algae is gone!! No more scrubbing & hosing on a wet slippery metal roof...." Read more

"Really heavy mold on my composition roof . As the directions clearly stated it takes a little time to work ...." Read more

"...Within a week, the moss was almost completely gone. Using this product has saved me time and has kept me off the ladder. It is a great product!" Read more

"I know it has made a difference on my roof but it is still not clear of moss after almost six weeks. I hope it will eventually do the job" Read more

65 customers mention34 positive31 negative

Customers are mixed about the toxicness of the product. Some mention it does not harm lawns or plants, and does less damage to sidewalks and driveways. However, others say that it is really deadly to plants, relatively toxic, and not safe for outdoor plantings.

"...+ Advertised - safe on any outdoor surface.+ Advertised - one step process... Wet & Forget!..." Read more

"...It actually started eating the moss and mold between cedar shakes, that was actually like a barrier for..." Read more

"...It also does lot less damage to sidewalks and driveways, since you are not blasting away the uniform surface layer on the concrete along with the..." Read more

"...Near the end of July, the roof was nearly covered in moss again and I was getting desperate...." Read more

57 customers mention36 positive21 negative

Customers are mixed about the quality of the product. Some mention that it keeps the roof in great shape and moss-free, while others say that it makes absolutely no discernible difference.

"...on an old wooden deck -- it removes the black crud and greatly improves footing, though it cannot fix the age of the wood...." Read more

"...It works great and does what it says. However.....the hose end sprayer fell apart and is unusable after perhaps using it 5 times...." Read more

"...SO for a Gallon you would get 6 gallons of product. Does not need to be any stronger. Mixed in pump sprayer...." Read more

"...It did an amazing job on my composit deck, and my cedar back porch deck, where all the garbage cans are, looks almost new...." Read more

Removes Mildew on Marker Engravings
5 Stars
Removes Mildew on Marker Engravings
I used this years ago on my slate roof and it removed the mildew just like it says. I noticed my family cemetery plot from the 1940's had markers that were so dark with mildew that they were unreadable as the pic shows. I knew this was safe on Stone Markers so I applied it heavy with a soft scrubbing brush and in 3 months the change was remarkable as you could clearly see the names and dates. It was been working over the winter and when it warms I will reapply and they will be good for years. For privacy I will not show the after pictures.
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Top reviews from the United States

Reviewed in the United States on March 5, 2024
Size: 128 Fluid OuncesStyle: RemoverVerified Purchase
One person found this helpful
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Reviewed in the United States on March 18, 2024
Size: 128 Fluid OuncesStyle: RemoverVerified Purchase
One person found this helpful
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Reviewed in the United States on June 25, 2014
Size: 128 Fluid OuncesStyle: RemoverVerified Purchase
80 people found this helpful
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Reviewed in the United States on March 29, 2023
Size: 128 Fluid OuncesStyle: RemoverVerified Purchase
56 people found this helpful
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Reviewed in the United States on March 8, 2024
Size: 128 Fluid OuncesStyle: RemoverVerified Purchase
Customer image
5.0 out of 5 stars Removes Mildew on Marker Engravings
Reviewed in the United States on March 8, 2024
I used this years ago on my slate roof and it removed the mildew just like it says. I noticed my family cemetery plot from the 1940's had markers that were so dark with mildew that they were unreadable as the pic shows. I knew this was safe on Stone Markers so I applied it heavy with a soft scrubbing brush and in 3 months the change was remarkable as you could clearly see the names and dates. It was been working over the winter and when it warms I will reapply and they will be good for years. For privacy I will not show the after pictures.
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Customer image
Customer image
One person found this helpful
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Top reviews from other countries

Shivam Soni
5.0 out of 5 stars Product is very good and customer Happy..
Reviewed in India on February 23, 2022
Size: 128 Fluid OuncesStyle: RemoverVerified Purchase
One person found this helpful
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Amazon Customer
5.0 out of 5 stars Good
Reviewed in India on January 26, 2020
Size: 128 Fluid OuncesStyle: RemoverVerified Purchase
Mrs. Dorothy Hazlewood
5.0 out of 5 stars Five Stars
Reviewed in the United Kingdom on July 24, 2017
Size: 128 Fluid OuncesStyle: RemoverVerified Purchase

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