Wet & Forget (Australia) Pty Ltd

'Meridian Building'

C4/15 Narabang Way

Belrose NSW 2085

Wet & Forget (Australia) Pty Ltd

'Meridian Building'

C4/15 Narabang Way

Belrose NSW 2085

Rapid Application

Bleach Free Moss, Mould, Lichen & Algae Remover.
You can now reach 8 metres (that's 2 storeys) without using a ladder!

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Wet & Forget Rapid Application


Rapid Application is the new and improved, ready-to-use, hose end version of the original Wet & Forget outdoor concentrate moss, mould, lichen and algae remover.  


How it works

Rapid Application works in exactly the same way as the original Wet & Forget concentrate, however it has been made easier to use and faster to apply! Rapid Application has a unique combination of biodegradable selective fungicides to target moss, mould, lichen, algae, and general biological growth. Like the original Wet & Forget concentrate, Rapid Application kills the spores. The weathering process gently removes the decomposing growth over time without damaging the surface it has infested. 



Rapid Application:

  • Works exactly the same way as the original Wet & Forget 5L concentrate. 
  • Comes in an easy, ready-to-use bottle. 
  • Has an automatic pre-set dilution. 
  • Easily connects to a standard garden hose. 
  • Reaches up to 8 metres (2 storeys). 
  • Bleach and chlorine free, non-caustic, and non-acidic. 
  • Has a PH of 8 (pure water has a PH of 7). 
  • Is non-systemic and is biodegradable. 
  • Requires no scrubbing or water blasting. 
  • Covers a minimum of 100sq metres. 
  • Has an unlimited shelf life. 
  • Kills problem spores at the source and helps prevent premature regrowth. 


Instructions for use

  • Sweep all leaves, dirt and other debris off the surface before application to allow maximum penetration of the active ingredients. 
  • Attach to a standard garden hose. 
  • Rapid Application is best applied in overcast, dry conditions to avoid accelerated evaporation. 
  • Do not apply if rain is expected within the next 6 hours.
  • Spray the affected area to the point of saturation. Do not hose off. 
  • Keep children and pets off the wet area until dry (normally 1-2 hours). 
  • Lichen requires a second application within 15 minutes of the first. 
  • If badly contaminated apply a second application one month after the first.  


Reaction Time

  • Algae will disappear within days. 

  • Moss will turn brown within a few days and other light growth will decompose within a few weeks. 
  • Black mould will noticeably improve within 4-6 months, however if the area is heavily contaminated it will take 6-12 months. 
  • Lichen requires two applications within 15 minutes of each other and will take 8-12 months to decompose. 


*Note: It is normal for some treated surfaces to turn an orange/brown colour after application. This discoloration indicates a good result, however it is not permanent and will soon disappear. 



  • You cannot use the original Wet & Forget concentrate (blue) with the Rapid Application hose-end nozzle (pink). It will not work as the dilution rates are different! 


If you are applying Wet & Forget® to your roof - click here for our easy tips. 

If you are applying Wet & Forget® to your tennis court - click here for our easy tips. 



Driveway Application  
The new hose-end nozzle makes short work of large driveways   Spray up to 8m with the new Rapid Application hose-end nozzle


Features and Benefits

Eliminates Harsh Methods

Wet & Forget helps prevent the damage caused by the harsh scouring of scrubbing and waterblasting.

Revolutionary Reach Nozzle

With its 8 metre reach
(that's 2 storeys!)

Residual Effect

Some of the ingredients remain active if the surface is porous. This helps prevent premature recontamination.

Unlimited Shelf Life

Unlike bleach based cleaners, Wet & Forget has an unlimited shelf life.



Before & After


How To Use

  • Rapid Application (2L)

    Rapid Application (2L)


    Bleach Free Moss, Mould, Lichen & Algae Remover. You can now reach 8 metres (that's 2 storeys) without using a ladder!

  • Wet & Forget 5L

    Wet & Forget 5L


    The original bleach-free moss, mould, lichen and algae remover.

  • Window Witch Window Cleaner

    Window Witch Window Cleaner


    Window cleaning done the easy way. No streaks, no squeegeeing, and no ladders. Just click onto your garden hose and go!

  • Sprayer - 7L Marolex

    Sprayer - 7L Marolex


    You'll love this sprayer! Keeps its pressure so well.