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performance

Simply mix with water in a garden or tank sprayer, apply to the surface, and walk away. No scrubbing, rinsing, or pressure washing required. The formula works over time with wind and rain to gently break down and remove moss, mold, mildew, and algae stains.

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Which Bottle Is Best For You To Achieve Max Coverage & Max Concentration?

Big projects and tough buildup call for something that delivers without endless scrubbing or repeat applications. Outdoor MAX provides powerful, reliable results and a clean that truly impresses. Each bottle covers 2-3X more area than bleach, so you get more done in a single application without extra purchases or unexpected costs.

wet & forget outdoor max xtreme reach

30′ Reach Hose End Sprayer & Refill


Best for fast application across larger areas and higher & hard-cover-surfaces.

Refill available to double the coverage & reduce cost.

wet & forget outdoor max xtreme reach

1 Gallon Outdoor Max Concentrate


Ideal for controlled applications exactly where you need it.

Mix as directed. Standard dilution rate = 5:1 (to make 6 gallons). Severe staining dilute to 3:1.

See it in action

Wet & Forget Outdoor MAX is a bleach-free outdoor cleaner designed to remove moss, mold, mildew, and algae stains over time with help from the wind and rain. There’s no scrubbing, no rinsing, and no pressure washing needed — just apply it to a dry surface and walk away.

FIND IT WHERE YOU SHOP

Find Wet & Forget products where you shop. These great reviews from real customers are why we know you’ll get the clean you’re looking for.

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Where to use

You can use Wet & Forget Outdoor MAX on virtually any outdoor surface. It’s ideal for use on larger surfaces. Simply spray & walk away.

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Aluminum

miss muffet's revenge

ARTIFICIAL TURF

miss muffet's revenge

ASPHALT

miss muffet's revenge

bRICK

miss muffet's revenge

CLAY

miss muffet's revenge

composite

miss muffet's revenge

concrete

miss muffet's revenge

fabric

miss muffet's revenge

marble

miss muffet's revenge

metal

miss muffet's revenge

outdoor carpet

miss muffet's revenge

pvc

miss muffet's revenge

painted surfaces

miss muffet's revenge

plastics

miss muffet's revenge

rubber

miss muffet's revenge

screens

miss muffet's revenge

concrete

miss muffet's revenge

stained surfaces

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Steel

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stone

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Stucco

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teak

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vinyl

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wood

  • 2X Coverage and concentration versus standard outdoor cleaners.
  • Easy Spray and Leave Outdoor Cleaner – No Rinsing or Scrubbing.
  • Treat Large Areas and High Elevations in Minutes.
  • Non-Acidic, No Bleach and No Phosphates. No Rinsing, No Scrubbing and No Power Washing.
  • Safe For Use On Any Outdoor Surface, Ideal for Large Surfaces or High Elevations.
  • Surfaces Stay Mold and Mildew Free 1+ Years in Most Cases.
  • Works with the Wind and Rain to Gently Clean Mold and Mildew Over Time.

Directions

  • Mix 1 part Wet & Forget with 5 parts water. For heavy staining, mix 1 part Wet & Forget with 3 parts water.
  • Apply to a dry surface. Fully saturate the surface and do not rinse or scrub. Avoid applying on hot days, as rapid evaporation may reduce effectiveness.
  • Allow wind and rain to gradually clean the surface over time (weeks – months).
  • Reapply as needed for maintenance or heavy buildup.
Where To Use Wet & Forget Outdoor MAX

Outdoor MAX is made for tough outdoor cleaning jobs – large areas and higher, hard-to- cover surfaces where moss, mold, mildew, and algae stains tend to build-up.

Exterior Home Surfaces 

Siding, Eaves & Soffits, Fascia, Trim, Decks, Patios, Roofs & Upper Areas

Large Surfaces

Driveways, Tennis Courts, Large Patios, Long Walkways

Other Outdoor Areas

Fences, Outdoor Structures, Large Surface Areas With Heavy Buildup

  • 2X Coverage and concentration versus standard outdoor cleaners.
  • Easy Spray and Leave Outdoor Cleaner – No Rinsing or Scrubbing.
  • Treat Large Areas and High Elevations in Minutes.
  • Non-Acidic, No Bleach and No Phosphates. No Rinsing, No Scrubbing and No Power Washing.
  • Safe For Use On Any Outdoor Surface, Ideal for Large Surfaces or High Elevations.
  • Surfaces Stay Mold and Mildew Free 1+ Years in Most Cases.
  • Works with the Wind and Rain to Gently Clean Mold and Mildew Over Time.
How To Apply:
  1. Choose your format (Hose End or Concentrate).
  2. Apply to a dry surface, thoroughly saturating the area.
  3. Allow the surface to air dry, and let the formula work over time.
When To Go Stronger (MAX Concentrate):
  1. Use the standard 5:1 dilution for typical outdoor cleaning.
  2. For stubborn, severe, or heavily contaminated surfaces, use the 3:1 dilution option.
Good To Know
  1. Results are gradual, not instant.
  2. Green algae stains clean up in weeks; black stains from mold and moss may take months.
  3. In most cases, a once-a-year maintenance spray helps keep surfaces clean.
  4. If you accidentally spray plants, rinse them with water.
  5. Keep off treated surfaces until fully dry.
  6. For general outdoor cleaning, choose Wet & Forget Outdoor Spaces.
Where To Use Wet & Forget Outdoor MAX

Outdoor MAX is made for tough outdoor cleaning jobs – large areas and higher, hard-to- cover surfaces where moss, mold, mildew, and algae stains tend to build-up.

Exterior Home Surfaces 

Siding, Eaves & Soffits, Fascia, Trim, Decks, Patios, Roofs & Upper Areas

Large Surfaces

Driveways, Tennis Courts, Large Patios, Long Walkways

Other Outdoor Areas

Fences, Outdoor Structures, Large Surface Areas With Heavy Buildup

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