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1 Gal. Moss Mold Mildew and Algae Stain Remover

  • Gentle bleach-free, non-acidic, no rinse outdoor cleaner
  • Concentrate makes 6 Gal.; treats up to 2,250 sq. ft.
  • Easily clean patios, roofs, siding, roofs or any other surface
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Product Overview

Wet and Forget 1 Gal. Moss, Mold, Mildew and Algae Stain Remover is the easy, one-step solution to removing outdoor moss, mold, mildew and algae. No scrubbing, rinsing or power washing required. This EPA-registered product is non-caustic, non-acidic and contains no bleach. Wet and Forget is safe for all outdoor surfaces. Simply dilute and apply with a pump-up garden sprayer, then sit back and let Mother Nature do the rest. Wet and Forget works gently over time, and is safe around plants and landscaping when used as directed.
  • Removes moss, mold, mildew and algae stains
  • Easy to use, 1-step application
  • Safe to use on any outdoor surface
  • Works great as a vinyl siding cleaner, deck cleaner (wood and composite), roof cleaner
  • Non-caustic, non-acidic
  • No scrubbing, rinsing or pressure washing required
  • Unlimited shelf life
  • Makes 6 Gal.
  • Covers 750 to 2250 sq. ft.
  • Subject to or will include a recycling fee in the following states: CA, OR
  • Does not ship to California - California residents please click here to purchase

Additional Resources

From the Manufacturer

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Specifications

Dimensions

Container Size1 GallonProduct Size128 GA-Gallon

Details

Concentrated or Ready to UseConcentratedFeaturesConcentrated
FormulationRegular StrengthPack Size1
Paint Prep & Cleanup Product TypeMold & Mildew ProductProduct Dispenser TypePlastic Bottle
Product FormLiquidRecommended SurfacesAcrylic,Concrete,Fiberglass,Glass,Laminate,Metal,Painted Surfaces,Plastic,Porcelain,Rubber,Stone,Tile,Vinyl,Wood
Returnable30-DayTypes of Surfaces CleanedMulti-Purpose
Where to UseBathroom,Floors,Kitchen,Outdoor

Warranty / Certifications

Certifications and ListingsNo Certifications or ListingsManufacturer WarrantyNone

Questions & Answers

Typical questions asked about products:

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Customer Reviews

  • 4.1
    out of 877 reviews
  • 78%recommend this product
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Showing 1-10 of 877 reviews
I have a cottage in a densely treed area and had a lot of moss on my roof. Since using this prod...
I have a cottage in a densely treed area and had a lot of moss on my roof. Since using this product over the last several years I have had no moss problem and the roof appears like new. I recommend this to everyone in our area.
by
  • Verified Purchase
  • Recommended
2 found this review helpful
I put this on a concrete patio several weeks ago and as yet there is no change in appearance.
I put this on a concrete patio several weeks ago and as yet there is no change in appearance.
by
Response from Wet & Forget ExpertJun 10, 2019
Hi Guy! Wet & Forget works with the rain and wind to gently clean up green and black stains on your patio. You won't see instant results. Black stains are a bit stubborn, and can take a month or two for you to start to see a change. We'd like to learn a little more about your application, if you could please give our office a call at 888-727-8524 so we can help you out. WetandForget
  • Verified Purchase
I live in Florida which has a high probability of hurricane hits so I have a metal roof which wil...
I live in Florida which has a high probability of hurricane hits so I have a metal roof which will withstand high winds. Unfortunately, part of my roof is under oak trees and the shade causes green algae to grow. I have used other algae removers that have to be rinsed off and can damage plants. This product requires no rinsing and does not harm plants. Just use a pump up sprayer and spray the problem areas. In a few days all of the green stuff and mildew was gone and my roof is nice and shiny. Another plus is the low price as this one gallon container of concentrate makes six gallons of remover. The remover was such a great buy that I bought more than I needed for future use. It was shipped right to my home at no extra charge. How do you beat that! Try it and I think you will be happy with this product as well.
by
  • DIY
  • Verified Purchase
  • Recommended
4 found this review helpful
In the past, I used my hand blower to remove clumps of moss, but I waited too long this time and...
In the past, I used my hand blower to remove clumps of moss, but I waited too long this time and the growth is out of control. After doing some research, I selected Wet & Forget (had to order online from Home Depot for pick-up from store) since it had a fair number of positive reviews and it was a MILD remover regarding surrounding plants and animals. Directions call to mix it 1 gal. of solution to 6 gallons of water, apply on an overcast day to avoid rapid evaporation and when rain was not expected for several hours. The image shows the results AFTER LESS THAN 48 HOURS: the moss clump on left was treated and the moss on right was a clump I had removed without treatment and then used for comparison. The Wet and Forget looks very effective so far! Looking ahead, once the moss dies off and I can blow the dead vegetation away, I am going to attach a zinc strip to the ridge vent for long term, continuous treatment. I will continue to use Wet & Forget for touchup as needed.
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    • Recommended
    2 found this review helpful
    Two stars because it was easy to mix and apply BUT It's been over 2 weeks and I see absolutely no...
    Two stars because it was easy to mix and apply BUT It's been over 2 weeks and I see absolutely no change. I used it on my wood deck, vinyl siding, brick steps and patio blocks. We've had a lot of rain which I thought was supposed to wash away the mold, mildew, etc. but it's all still there. Very disappointed. $32 for the product, $15 for the sprayer and nothing to show for it. :(
    by
    Response from Wet & Forget ExpertAug 6, 2018
    You most likely will not see changes on black stains after two weeks. Black stains and moss clean up after a few months. Green stains will clean up after two weeks with good rain. Please give our office a call at 888-727-8524 so we can look into this and help you out. WetandForget
      This product is easy to use... as the name implies. . Just wet and forget. It does take some time...
      This product is easy to use... as the name implies. . Just wet and forget. It does take some time to work . If you are looking for an immediate result than this product is not for you. It is easy to use and inexpensive enough to reapply often and take control of moss and algae growth on many different surfaces.. concert...wood... roof shingles ect.. I like it .. and would recommend it. Wish you could just walk Into a home depot and buy it.. ordering on line was ok.. but i would rather just go get it when I need it.
      by
      • Verified Purchase
      • Recommended
      21 found this review helpful
      I use this product on family headstones that have been covered with moss and mold. It works brill...
      I use this product on family headstones that have been covered with moss and mold. It works brilliantly ! It slowly removes the moss and mold build up with no scrubbing or wiping. Just spray it on and mother nature does the rest.
      by
        • Recommended
        31 found this review helpful
        What they did forget to tell you is that it absolutely DOES NOT work. Bought a 1/2 gallon and did...
        What they did forget to tell you is that it absolutely DOES NOT work. Bought a 1/2 gallon and did a test on my my standard fiberglass shingles. A 100 sq ft area did absolutely nothing. Right next to it I did another test of bleach water and scrubbing with a broom - which worked well - but was certainly work. Don't waste your money and anxiety for a product that's a waste. Only thing that works on algae/mildew/moss stained roof is scrubbing with bleach water.
        by
        Response from Wet & Forget ExpertAug 21, 2017
        Wet & Forget is not an instant results product, it works over time with the wind and the rain. Please give our office a call at 888-727-8524 so we can help you out. WetandForget
          2 found this review helpful
          Applied product after carefully following directions. Product removed green stains, but left a s...
          Applied product after carefully following directions. Product removed green stains, but left a slight gray discoloration on white vinyl siding. Applied 2nd application but gray discoloration remains.
          by
          Response from Wet & Forget ExpertJun 6, 2017
          After a day or two, green algae will die off and have a grayish color. After a nice rain, you shouldn't see any remains. Please give our office a call at 888-727-8524 for more assistance. WetandForget
          • Verified Purchase
          • Recommended
          17 found this review helpful
          I have used Wet & Forget for several years to address Mildew & Algae related growths on buildings...
          I have used Wet & Forget for several years to address Mildew & Algae related growths on buildings as I live in a heavily wooded area which means I'm always cleaning something, so Wet & Forget saves me from having to break out the power washer & spend half of a day washing the house. Like the name says, I just Wet & Forget, then a few days later you can see the difference. I was super impressed, when I used Wet & Forget to clean 43 years worth of weathering from a family tomb, this product restored the concrete to a like new condition, it did take 2 applications, but saved me so much time & effort. Whenever I see folks struggling with Mold, Mildew & Algae issues, I recommend they use Wet & Forget and I know I have converted others to fans of the product, because I see them using it and they too comment on how easy it is. The attached images are taken 2 days apart and demonstrate how simple and fast the product works for me.
          by
          • DIY
          • Verified Purchase
          • Recommended
          51 found this review helpful
          Showing 1-10 of 877 reviews