Wet & Forget Outdoor Moss, Mold, Mildew, and Algae Stain Remover Spray, 64 oz
Wet & Forget Outdoor Moss, Mold, Mildew, and Algae Stain Remover Spray, 64 oz
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Wet & Forget Outdoor Moss, Mold, Mildew, and Algae Stain Remover Spray, 64 oz

4 stars out of 954 reviews
(4.0)|
954 ratings

Key item features

  • Effortless Cleaning: This stain remover simplifies outdoor surface cleaning, effectively tackling moss, mold, mildew, and algae stains.
  • Convenient Application: The product features a ready-to-use formula with an integrated trigger sprayer for easy application.
  • Gentle Formula: Its bleach-free and non-acidic composition ensures safe use on a wide range of outdoor surfaces without causing harm.
  • Automatic Action: Simply spray and let the wind and rain naturally clean the surface over time, eliminating the need for scrubbing or rinsing.
  • Versatile Use: Ideal for various outdoor areas including porch steps, fountains, concrete, landscape stones, and fabric patio umbrellas.
  • Long-Lasting Clean: The formula effectively cleans surfaces, helping them stay cleaner for extended periods.
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Customer ratings & reviews

4 out of 5 stars
stars954 ratings441 reviews
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Reviews summary

Pros
  • : Cleans dirty and green surfaces without harming vegetation.
  • : Removes algae, mold, and moss from roof surfaces.
  • : Effective on various types of fences and surfaces.
  • : Offers a reasonable cost for the product.
Neutral
  • : Effective on some surfaces, but struggles with severe cases.
  • : Effective on some surfaces, but inconsistent on others.
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Showing 1-3 of 441 reviews

Sep 28, 2025
Kayk
Top Reviewer
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Workout horse. Will buy again!

The spray was easy to use! I cleaned my carport after 18 years! The instructions were easy to understand. It cleaned away dirt, mold %26 algea quite easily. Since it was so ground in in areas of not cleaning for so long, it require some elbow work- outs. Mainly, the spray melted the dirty carport very well. Didn't see a stain.

Helpful?11LJBKK6M6AW50819822
Sep 8, 2025
John
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

This stuff works

This is easy to use. I have a white house with vinyl siding that will grow black mold. I have used bleach based products and it lasts about a year before the mold starts to return. The wet and forget lasts years. And without the bleach it does not harm your plants. It does take it a few months before it really takes effect but it does work. You just have to be a little patient.

Helpful?11LJBKK6M6AW50819822
Oct 12, 2025
Emma
Item details
Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Surprised that this product works on Crabgrass!

Works great on green algae on my porch. I had some left over so I spritzed a few weeds. To my surprise, it worked surprisingly great on crabgrass! I know this not its intended use, but it works for those pesky weeds in cracks. I don't like using herbicides, so I was pleasantly pleased.

Helpful?11LJBKK6M6AW50819822