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Australia's resource for control of worms, flies and lice in sheep,
and worms in goats

The Quick Quiz

This quick quiz tests your knowledge of sheep and goat parasites and their control. 

1. Under what conditions would you consider using a long-acting drench for worm control?

2. What management strategies are considered appropriate for purchased sheep in the period after the quarantine drench?

3. What causes fleece rot, and why is it important?

4. When purchasing sheep, what factors about the place of origin or the sheep themselves, would increase the risk of lousy sheep?

>> Check the answers.

State Outlooks for February 2020

While one rain event does not break a drought, it has provided conditions suitable for barber’s pole infections, and flystrike outbreaks. Producers in all regions that have received rain are advised to monitor their stock.

Warning: wet weather problems

Continued frequent rain events and an already full soil moisture profile in many places will bring a host of extra problems for livestock such as worm infections and flystrike. Increase the frequency of Worm Egg Count monitoring to 4-weekly during these risk periods. Barber’s pole worm is already creating problems in the southern half of Australia, where it normally is not a major problem. Will the rise of worms post-drought be different from other years? Read Deb Maxwell's article in the NSW report. Monitor for flies frequently, particularly for body strike 2–3 days after a rain event.

When doing worm egg counts, we recommend the use of WEC providers who have demonstrated accurate worm egg counting in the ParaBoss WEC QA Program. Only the providers whose results were within the acceptable statistical limits have been endorsed and included on the list; unfortunately a number of participants were unsuccessful. Is your provider on the list?

ParaBoss Technical Workshop, Adelaide 10 March

Just a few participant places are still available, please contact us immediately if you would like to attend.


A long-acting drench should be considered if sheep are expected to be confined for extended periods during wet conditions.
Use ParaBoss-endorsed WEC providers
A few spots are left, contact us now!



New South Wales
>> full report

Rainfall has been highly variable due to the patchy storm activity. Producers should monitor mobs for barber’s pole infections frequently and daily for flystrike.

Victoria
>> full report

Calendar-based drenching programs have proved ineffective this year and frequent monitoring of all classes of stock, and especially of both sheep and cattle weaners, is recommended.

Queensland
>> full report

Rain has fallen over several days and has provided suitable conditions for both blowfly and barber’s pole. The alert for body strike continues in all sheep, including Dorpers.  

Service drench guns and jetting plants to make sure they are still working and delivering the correct dose.

Western Australia
>> full report

Worms and blowflies shouldn’t be causing trouble at present, but they will be re-grouping for an appearance later in the year. All sheep should be worm tested at the end of summer, usually during March.

In the higher rainfall regions, barber’s pole remains a threat.

Tasmania
>> full report

Second summer drenches should be completed, or at least planned. The fly season has been quiet due to the cold windy and generally dry season, but some increased humidity from the recent rain may change this situation.

South Australia
>> full report

There has been no evidence of spikes in worm numbers since the rainfall, but the possibility remains, and especially for barber’s pole in higher rainfall areas.

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