Wet & Forget: it works hard, so you don't have to.

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Wet & Forget Outdoor

Moss, Mold, Mildew & Algae Stain Remover

Are you tired of the never-ending cycle of cleaning black and green stains from your home? Introducing the easiest solution for eliminating these issues without using elbow grease or harsh chemicals—Wet & Forget Outdoor Cleaner! Simply spray and walk away! That’s it. Wet & Forget goes to work with the wind and rain to gently clean the surface over time.

  • Easy spray & leave application
  • No scrubbing, rinsing or pressure washing
  • Safe for use around landscape and plants, when used as directed
  • Bleach-free, phosphate-free and non-acidic
  • Surfaces stay clean 1+ years in most cases
  • Safe for virtually any outdoor surface
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Wet & Forget works. See for yourselves.

Wet & Forget’s gentle cleaning action uses the wind and rain to continue working overtime; it keeps ugly stains at bay for a year or more on most surfaces.

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See Wet & Forget Hose End in Action

Wet and Forget Hose End makes cleaning large surfaces an effortless task. Simply attach to your garden hose, spray the surface, and forget it. Wet & Forget does the rest. Check out our video highlighting how quickly you can clean high elevations. We also demonstrate how a large stamped concrete driveway can be treated in less than 2 minutes with 1 bottle of hose end!

  • Where to Use Wet & Forget Hose End
  • You can use Wet & Forget Rapid Application Hose End on virtually any outdoor surface. Simply spray & walk away. Wet & Forget does the hard work for you.
  • Visit Wet & Forget on YouTube ›

Where Can I Use Wet & Forget Hose End?

You can use Wet & Forget Rapid Application Hose End on virtually any outdoor surface. Simply spray & walk away, Wet & Forget Outdoor does the hard work for you.

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Benefits of using Wet & Forget Outdoor Cleaner
  • Bleach-free, non-acidic and phosphate-free.
  • 1-Gallon container makes 6-gallons!
  • Requires no scrubbing, no rinsing, and no pressure washing.
  • Conserves water.
  • Safe for virtually any outdoor surface.
  • One-step application: Simply spray and walk away! Wet & Forget does the work for you.
  • Eliminates even the toughest cases of moss, algae, lichen, mold or mildew.
  • Long-lasting: Keeps the surface clean for at least 1+ years in most cases.
  • Wet & Forget is an EPA registered product. Many products on the market are not.
  • Bio-degradable.
  • Unlimited shelf life.
  • Safe to store in the sprayer after mixed.
  • Wet & Forget Outdoor has a pH level of 8, while pure water has a pH of 7. Most products on the market have a pH level of 10-13, which is 100 – 10,000 times more alkyl than Wet & Forget Outdoor.

Application & Tips

Wet & Forget outdoor concentrate fill garden sprayer with water to
2 1/2 cups (20 oz.) 1 gallon mark
5 cups (40 oz.) 2 gallon mark

Application: Apply Wet & Forget Outdoor to a DRY outdoor surface until thoroughly saturated. Wet & Forget is best applied in cool, dry conditions to avoid evaporation. Do not use if rain is in the forecast within 4-5 hours. Avoid application during the warmest part of the day or hot days, to avoid evaporation which can dimension results. Temperatures need to be above 32 degrees during application and for approximately 5 hours after.

Reaction Time:

Once treated with Wet & Forget, green growths such as algae will clean up within a few days or weeks in most cases. Black stains caused by mold and mildew can take a month, sometimes several months. Worse-case scenario, heavy black stains that have built-up for many years can take six months - 1 year to come clean. Be Patient. Good Things Take Time.

You’ll never have to wait for results after your first initial cleaning; you’ll move to an annual maintenance application to keep those surfaces mold-free.

Maintenance:Repeat application once a year or at the first sign of new moss, mold, mildew or algae growth.

Treating Moss:To get rid of moss, thoroughly saturate the moss making sure the Wet & Forget Outdoor soaks through and comes in contact with the surface the moss has attached itself to. Over the next few days or weeks, you’ll notice the moss turning brown, curling up and detaching from the surface. The wind and rain will help wash away any remaining moss.

Treating Lichen: Lichen is a complex combination of fungus and algae that have learned to live together, forming a unique type of growth. Lichen can cause pitting on outdoor surfaces. The symbiotic relationship between the fungus and algae makes lichen very hardy and difficult to get rid of. But don't worry--even this robust growth is no match for Wet & Forget Outdoor. Use a garden sprayer to thoroughly saturate the lichen with a solution of 1 part Wet & Forget Outdoor and 5 parts water. Wait 15 minutes, and spray a second time. The outer shell will soften during this time so Wet & Forget can penetrate the lichen's inner layer. It is best to spray lichen on a day that is not too sunny, to prevent rapid evaporation and to allow Wet & Forget more time to work.

Check out our FAQ’s or Blog for additional information.

Active Ingredients

Alkyl dimethyl benzyl ammonium chloride 9.9%

Where To Use Wet & Forget Outdoor

Wet & Forget is non-acidic and contains no bleach; therefore it can be used on ANY outdoor surface material. Some of the more popular surfaces include: Roofs, Siding, Decks, Walkways, Driveways, Brick, RVs, and Boats.

For large surfaces and high elevations, we suggest using our Wet & Forget Outdoor Hose End which reaches areas up to 30’, perfect for roof cleaning. LEARN MORE

Exterior Home Surfaces: Covered Porches, Decks (All types), Downspouts, Driveways, Eaves, Gutters, Patios (All types), Pavers, Roofs (All types), Screens, Shingles (All types), Sidewalks, Siding (All types), Steps

Lawn & Garden:Awnings, Diving Boards, Fences (All types), Fountains, Gazebos, Greenhouses, Hammocks, Lanais, Lawn & Patio Furniture (All types), Outdoor Mats/Rugs, Outdoor Pots, Patio Umbrellas, Plastic Playhouses, Play Equipment, Pool Liners, Pool Surrounds, Retaining Walls, Shade Sails, Storage Units

Marine: Aluminum, Boat Bilges, Boats, Boat Carpeting, Boat Seats, Canvas, Fiberglass, Inflatable Boats, Sails, Teak

Camping: Cabins, Outdoor Furniture, Pop-Up Campers, RVs

Other: AstroTurf, Basketball Courts, Cars & Trucks, Log Homes, Monuments, Tennis Courts, Tombstones

Materials: Aluminum, Asphalt, Brick, Cement, Ceramic, Clay, Composite, Concrete, Dryvit/EIFS, Fabric, Fiberglass, Flagstone, Limestone, Marble, Metal, Natural, Painted, & Stained Wood, Painted Surfaces, Plastic, PVC, Rubber, Sandstone, Slate, Steel, Stone, Stucco, Teak, Textured Surfaces, Tiles, Tin, Vinyl

Commercial: Airports, Amusement Parks, Cemeteries, Freeways, Hospitals, Hotels & Motels, Parks, Public Buildings, Schools, Stadiums, Zoos...

and virtually any other surface you can think of!