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Slasher is a registered organic weedkiller made from nonanoic acid (naturally derived from plant oils).

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Slasher is a registered organic weedkiller made from nonanoic acid (naturally derived from plant oils). Slasher works rapidly to control a broad range of weeds, moss, algae and lichen. It is non-selective and works on contact (not systemic). Slasher does not need heat or sunlight to work so it’s effective year round. Biodegrades in the soil within 3 days, is salt-free and contains no glyphosate.

Active Constituents:

525g/L Nonanoic Acid

Nonanoic acid is also known as pelargonic acid and is derived from plant oils.


  • Kills weeds, moss, algae and lichen on contact
  • Rapid action, desiccating plants within hours
  • Doesn’t require heat or sunlight to work
  • Can be used anywhere in the garden and around the house
  • Active ingredient made from plant oils (GM free)
  • No lasting spray residues (100% biodegradable within a few days)
  • Glyphosate free
  • Safe for pets and children once dried on foliage
  • Registered Organic for use in organic farms and gardens

Instructions for Use

See leaflet for more information.

Safety, First Aid & Liability

Download Safety Data Sheet for further information

LIABILITY: This product can only be used as directed, and the product supplier has indicated it will not be liable for any loss or damage arising from a failure to strictly follow the directions for use.

NOTE: Do not spray on porous surfaces without spot testing first. Slasher Weedkiller may cause discolouration on porous hard surfaces like pavers and bricks.

Additional information

Weight 1.2 kg

Units Per Pack


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