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Flystrike Assist app

Julia Smith, Development Officer

Sheep Industry Business Innovation
Agriculture and Food
Department of Primary Industries and Regional Development, WA

September 2017


The Flystrike Assist app, by the Department of Primary Industries and Regional Development in Western Australia, has been updated just in time for what is shaping up to be a busy flystrike season.

Preventing flystrike is much more economical than treating it and this app is just one of the tools sheep producers have at their fingertips to manage their risk.

Given the wide range of chemicals available to producers, it can often be difficult selecting a chemical that balances the protection period against the strict withholding periods. The app includes all of the commercially available flystrike preventative chemicals in a central database and allows the producer to choose the chemical they intend to apply, access all the details about its withholding requirements and protection period, set an application date and prepare a flock treatment timeline and compare this against other chemicals.

The user can select a specific date of application and the app develops a timeline of when the withholding and protection periods are finished, as shown in Figures 1 and 2. The app can also be used to compare the timelines of withholding and protection periods for various chemicals.

Figure 1.
Figure 1.
Figure 2.
Figure 2.

Figures 1 and 2. The Protective Period, Wool Withholding Period, Meat Witholding Period and Export Slaughter Interval is displayed as bar graphs, either showing (Fig. 1) the number of weeks for the periods or (Fig 2.) the actual dates the periods end from a particular application date.

The risk of flystrike is determined by various factors such as environment conditions and the susceptibility of the sheep. Spring is generally the optimum time for flystrike given the warm and wet conditions.

Sheep with high levels of dags are most at risk of breech flystrike, whilst those highly wrinkled in long wool or showing signs of fleece rot are most susceptible to body strike.

It is essential that producers monitor their sheep regularly during high risk periods as smaller strikes can be difficult to pick up.

For more information on managing flystrike, please visit, or download the free app on Android and iOS.  

Please note that this app is only available for Android and Apple phones/devices, not Windows and it is not a website application.