30 SECONDS Outdoor Cleaner - Algae, Mold & Mildew Stain Remover for Concrete, Wood, Patio, Siding Deck - Hose End Spray Bottle 64 fl oz
30 SECONDS Outdoor Cleaner - Algae, Mold & Mildew Stain Remover for Concrete, Wood, Patio, Siding Deck - Hose End Spray Bottle 64 fl oz
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30 SECONDS

30 SECONDS Outdoor Cleaner - Algae, Mold & Mildew Stain Remover for Concrete, Wood, Patio, Siding Deck - Hose End Spray Bottle 64 fl oz

4.1 stars out of 935 reviews
(4.1)|
935 ratings
30 SECONDS Outdoor Cleaner - Algae, Mold & Mildew Stain Remover for Concrete, Wood, Patio, Siding Deck - Hose End Spray Bottle 64 fl oz30 SECONDS Outdoor Cleaner Algae Mold Mildew Stain Remover for Concrete Wood Patio Siding Deck Hose End Spray Bottle 64 fl oz30 SECONDS Outdoor Cleaner Rapid Results Cleans Stains Algae Mold Mildew Dirt Grime Fences Siding Concrete Deck 64 oz Hose End Spray Bottle 3 Pack
Size:64 oz

Key item features

  • Effective Cleaning: Cleans stains from organic growth like algae, mold, mildew, dirt, and grime on various outdoor surfaces.
  • Ready-to-Use Formula: Powerful, pre-mixed 64 fl oz solution that requires no additional mixing, ready for immediate application.
  • Effortless Application: Designed for easy use; simply attach the hose-end spray bottle to a garden hose, spray the surface, and rinse off.
  • Versatile Surfaces: Provides immediate results on a wide range of outdoor materials including concrete, wood, patios, siding, decks, bricks, stucco, and canvas.
  • Plant-Safe Design: Formulated to be safe for use around landscaping, plants, and lawns, as the solution breaks down once rinsed into the soil.
  • Surface Preparation: Ideal for preparing surfaces before painting, staining, or varnishing, ensuring a clean base for optimal results.
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was $28.66
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About this item

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Customer ratings & reviews

4.1 out of 5 stars
stars935 ratings453 reviews
How item rating is calculated
  1. 5 stars66% (616)
  2. 4 stars10% (95)
  3. 3 stars7% (68)
  4. 2 stars4% (42)
  5. 1 star12% (114)

Reviews summary

Pros
  • : Quickly removes mildew from surfaces.
  • : Quickly removes dirt and stains with minimal effort.
  • : Offers lower prices compared to competitors.
Neutral
  • : Can be effective, but may require extra effort or prove inconsistent.
Cons
  • : Bottle design may allow liquid to escape during transport or storage.
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Showing 1-3 of 453 reviews

Sep 2, 2025
Fiddo
Item details
Size: 64 oz
5 out of 5 stars review

Verified Purchase

Good as new.

An old pontoon boat was under a tarp that had a very thick layer of mold on it as well as the seats, carpet and the plastic/vinyl walls. The 30 sec mold and mildew cleaner worked like a charm. We did use a broom to get the liquid down deeper into the carpet but it made the boat look new again. Sorry I only have the before picture.

Helpful?4E2H4NWNCZM1310808903
Sep 21, 2025
Rhi
Item details
Size: 64 oz
5 out of 5 stars review

Verified Purchase

highly recommend!

I could not be happier with this product!! my fence was looking terrible after 3yrs and this stuff has it looking like it was just installed again! spray on, let it sit for a minute or so and rinse off! some spots may need a second spray/rinse but it's really that easy. just ordered two more gallons!

Helpful?4E2H4NWNCZM1310808903
Jul 11, 2025
Contoni
Item details
Size: 64 oz
5 out of 5 stars review

Verified Purchase

Gold

It cleaned my house like it had been pressure washed in less than 10 minutes. I will highly recommend! I purchased this the day after I had one side of my house, pressure washed, and, I had I known that this existed prior to, I could have saved six hours of running my own water and electricity and could have accomplished this in a fraction of the time. It removed mold, mildew, and green gunk immediately. I did not have to use anything to scrub it, just sprayed it on my house side and and rinsed it three minutes later.

Helpful?4E2H4NWNCZM1310808903