Mould Magician - Moss, Mould and Lichen Killer

Guardian ChemicalsSKU: CP-MM-A

Size: 1 Litre

GST included ($19.13 excluding GST)

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Mould Magician is a slow-release mould, moss, algae, and lichen killer built on 99g/L Benzalkonium Chloride. Developed as a one-step treatment, Mould Magician requires no water blasting, no scrubbing and is completely bleach free. Mould Magician offers up to 12+ months protection when applied as directed.

Key properties:

  • Non-flammable.
  • No rinse, scrubbing or cleaning agitation required.
  • Economical when applied at the recommended dilution rates.
  • Long lasting active quaternary compound that retains germicidal properties preventing microbial regrowth.


  • Sweep all leaves, dirt, and other debris off the surface before application to allow for maximum penetration of the active ingredients. Dilute one part Mould Magician to six parts water (1:6) in a garden or backpack sprayer. Spray the affected area to the point of saturation. Do not hose off. Apply during overcast, dry conditions to avoid accelerated evaporation. Lichen requires a second application within 15 minutes of the first.
  • For the best long-term results, avoid application if rain is expected in the next 12-48 hours.
  • Keep children and pets off the wet area until dry (normally 1-2 hours). 

Quick use dilutions:

  • Slow-release mould killer: Dilute at the recommended rate of 1:6 and apply when weather is fair. Delay outdoor treatment application if rain is expected in the next 48 hours.

  • Note: Treated areas will begin to brown initially when applied. This is expected and will dissipate over the weeks to come.


  • 1L bottle (makes 7L of product) covers a minimum of 26m2.
  • 5L J/can (makes 35L of product) covers a minimum of 130m2.
  • 20L J/can (makes 140L of product) covers a minimum of 520m2.

Storage and shelf life:
Twelve months when stored in unopened, original containers. Storage area should be not exposed to extreme temperatures. Do not expose to direct sunlight in storage.

Product availability:
1L, 5L, or 20L.

Please note: The 20L Mould Magician can only be shipped to a commercial address (non-residential), or picked up from our freight depot. This is due to the product being a Class 8 Chemical. Please get in touch with us for more information.


Technical data sheet

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