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ZYTHOR® Gas Fumigant

Provides broad-spectrum control of stored product pests and quarantine pests.

ZYTHOR Gas Fumigant (sulfuryl fluoride) is registered for use exclusively by licensed fumigators who partake in the Ensystex ZYTHOR Gas Fumigant Product Stewardship program.

Fumigation is a very specialised form of pest control. It is used to control those pests that cannot be easily or effectively controlled any other way. The active ingredient in ZYTHOR is sulfuryl fluoride, commonly referred to as SF. ZYTHOR is a non-flammable, odourless, colourless gas that rapidly penetrates and distributes quickly. It’s also non-corrosive, making it the smarter fumigant solution for sensitive areas with modern equipment and electronic devices present.

ZYTHOR provides broad-spectrum control of stored product pests and quarantine pests, with superior penetration of airspaces and food commodities, coupled with low sorption into these commodities. It leaves no unpleasant odours or off-flavours.

ZYTHOR is not an ozone depleter, which makes it an ideal alternative to methyl bromide. It is also the perfect fumigant to use as a resistance-breaker in grain storages where phosphine is routinely used.  ZYTHOR provides for flexible exposure times depending on your facility goals, with rates controlled using our Fumicalc™ Program.

Key Features

The premium broad-spectrum fumigant with superior penetration, for the control of insect pests of stored products, timber, shipping containers and furnishings. With its unique mode of action, it is also the perfect rotation fumigant to break the resistance cycle reported with other fumigants such as phosphine.

  • ZYTHOR rapidly penetrates porous materials.
  • ZYTHOR more rapidly aerates from materials and commodities.
  • ZYTHOR shows lower sorption on fumigated materials.
  • ZYTHOR does not react with materials to form unpleasant odours or off-flavours.
  • ZYTHOR is suitably toxic to all target insect species and rodents. 
  • ZYTHOR is not explosive at any concentration in the air.
  • ZYTHOR is not an ozone depleter.


FUMICALC™ for Targeted Results

FUMICALC is our computer-based program that has been developed to ensure the accurate use of ZYTHOR. Designed specifically for use in Australia, but incorporating the heritage developed over 15-years of use in the USA, Fumicalc offers options for:

  • UNIQUE resistance management grain fumigation based on the latest Australian resistance data
  • Commodity food and commodity storage fumigation
  • Structural fumigation
  • User Defined CT
  • Rodent control only

FUMICALC is cloud based and can be used on any smart phone, tablet, or computer regardless of the Operating System to make fumigation calculations simpler and faster. 




Numerous peer-reviewed efficacy studies have been published in Australia and around the world to define effective dosages and fumigation practices to optimise the control of key insect pests with sulfuryl fluoride.


Product Details
Active Ingredients: 998.0 g/kg sulfuryl fluoride
Pesticide Group: Fumigant
Formulation Type: Gas under pressure
Pests Controlled: Rodents and insects such as borers, bed bugs, cockroaches, clothes moths, carpet beetles, drywood termites and all life-stages of stored product pests.
Pack Size / Code: 56.5 kg (CHFZY1001)
Resistance Group: 8C

For more information:
Product Brochure
Product Label
AQIS Approval


ZYTHOR is a registered trademark of Ensystex, Inc. used under licence in Australia by Ensystex Australasia Pty Ltd and in New Zealand by Ensystex New Zealand Ltd.