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Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces
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
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From the manufacturer
FEATURES
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Use Wet And Forget To Clean
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BUY | BUY | BUY | BUY | BUY | |
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Customer Reviews |
4.0 out of 5 stars
41
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4.4 out of 5 stars
895
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4.3 out of 5 stars
5,420
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4.4 out of 5 stars
9,591
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4.0 out of 5 stars
12,732
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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
- Best Sellers Rank: #3,431 in Health & Household (See Top 100 in Health & Household)
- Customer Reviews:
Product guides and documents
Compare with similar items
This Item Wet & Forget Moss, Mold, Mildew, & Algae Stain Remover Multi-Surface Outdoor Cleaner Concentrate, Original, 128 Fluid Ounces | Recommendations | dummy | dummy | dummy | |
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | -45% $32.93$32.93 List: $59.99 | $58.60$58.60 | $18.98$18.98 | $29.17$29.17 | -36% $11.91$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 |
Videos
Videos for this product
2:08
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This Works MIRACLES - See the Difference It Made!
Cameron Alder Jade
Videos for this product
0:36
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Wet And Forget Outdoor Cleaner Concentrate
Wet & Forget USA
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1:01
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#thisorthat Outdoor Surface Cleaner
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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
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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
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The pros:
+ VERY easy to apply with a spray bottle or pump sprayer.
+ Work great on exterior brick surfaces, like chimneys.
+ Advertised - 1 gallon concentrate makes 6 gallons of ready to use product. Covers approximately 750-2250 square feet.
+ Advertised - non-caustic, Non-acidic, Contains no bleach.
+ Advertised - safe on any outdoor surface.
+ Advertised - one step process... Wet & Forget!
+ Advertised - EPA approved one step process that requires no scrubbing or rinsing.
+ Advertised - safe around plants.
+ Advertised - continues to clean for up to a year.
+ Advertised - can be applied at any temperature above 32° & no rain is expected for 4-5 hours.
The cons:
- Update - 2016 - The price has really gone up in the last year, making this product VERY expensive! Yes, this is a concentrate & makes 6 gallons, but that over $5 a gallon! I dropped one rating star for this.
- Work very s-l-o-w-l-y! Don't expect instant results on everything this product is applied to. It could take a month or longer for visible results.
- Slight bleach like smell when it's first applied. Not bad, but not scent free.
Closing comments:
▪ I sprayed the side of a shed & fencing that had green algae on it. By the next day, it wasn't green, looked white, which should wash off when it rains. :)
When I was reading the instructions on how to dilute the concentrate... 1 part Wet & Forget Outdoor to
5 parts water, I thought there had to be easier instructions. I found this on the Wet & Forget website FAQ (Frequently Asked Questions).
▪ For a 1 gallon container or sprayer, add 2-1/2 cups (20 oz.) of Wet & Forget Outdoor concentrate & fill with water to the 1 gallon mark.
▪ For a 2 gallon container or sprayer, add 5 cups (40 oz.) Wet & Forget Outdoor concentrate & fill with water to the 2 gallon mark.
► Update - June 25, 2014
▪ sprayed the green on the fence & on the concrete under our hose reel yesterday. Today, all that green is gone! Not everything I sprayed shows this kind of result, but so far, I'm impressed enough to up my product rating to 4 out of 5. :)
► Update -November 11, 2014
▪ We sprayed the driveway + sidewalk yesterday & I can already see it working on the driveway! The long range plan is not having to pressure wash the algae off the concrete in the Spring. :)
▪ I just ordered another gallon so I'd have it on hand, ready to use.
► Update - November 18, 2015
▪ Since I started using Wet & Forget on the sidewalk & driveway, I haven't had to do any power washing in years! :)
▪ 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. If you buy 2 gallons on-line, the shipping is free! :)
► Update - March 9, 2016
▪ I've been using this for years & it works as advertised. The down side is how expensive it's gotten! Last year I paid about $25 a gallon, this year it's $34 a gallon!
▪ The best price I could find this year is here on Amazon & in my opinion, it's expensive! :(
One needs to be patient after using the product. It works slowly over a year. The best time to apply it is dry fall day, so the rains can help with cleaning, not to mention winter snow. After that once a year to year and a half, maintainence is more than enough. And come spring and summer, you can enjoy the cleaner surfaces.
I also used it on cedar roof. I did excellent job with it. However, the roof was old and leaked after this application, requiring me to change the roof. My theory could be a combination of any: 1) It actually started eating the moss and mold between cedar shakes, that was actually like a barrier for water somewhat. my cedar shakes had only 2 to 5 years of life left and potentially cleaning it, reduced its life 2) I walked on roof to apply the product which could have strained old shakes. - There are special shoe fasteners that I overlooked wearing. The house damage was negligible and very promptly addressed, though I wish I didnt have that extra expense. That said, I would stay out of the roof - for the rest of my life and have a professional take care of business.
I almost always have extra bottles on hand. It is extremely helpful to have a battery sprayer. I used a 1 gallon manual one for years and it works just fine. Battery sprayer is way faster and probably reduces the time by three quarters.
i have not tried the other product from wet and forget that connects to the hose. Many have found difficulty in the way the spray works. I dont want to try something new when this works great.
Moss, slowly wears off. Lichen growing on organic surfaces is the hardest, but it loosens that up too. I noticed that the lichen dries up and does not grow even after 2 years of application. I have used this product over 10 years now and this is a cumulative review.
Reviewed in the United States on March 8, 2024
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