Short Wool Lice Tool

Introduction

This program helps to assess whether sheep should be treated after shearing. It estimates the probability that the flock is infested with lice at shearing by separately estimating the risk that:

lice were present at the last shearing but were not eradicated
lice entered with purchased rams, ewes or other stock
lice entered on stray sheep

For some screens you can indicate in the first question that there are no relevant sheep in that category and skip further questions on that screen

Click on the Start button below to begin, then use the Next button to proceed through the stages. Should you wish to change any options chosen in previous stages then use the Back button to step backwards and modify your selections.

Start

Property

State

New South Wales
Queensland
South Australia
Tasmania
Victoria
Western Australia

Region

High Rainfall
Sheep/Wheat
Pastoral

Regional Lice Prevalence

%

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Background

Time since last treatment

Previous shearing
Shearing before that
3 or more years ago

Long wool lice treatments

Don't know
Yes
No

Have you seen lice in these sheep?

Not looked for lice
Lice seen
No lice seen

Any signs of rubbing

Rubbing status unknown
Some sheep rubbing
No sign of rubbing

You can check rubbing with the Rubbing Tool

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Treatments

Lice present at last shearing?

No information on lice status last year
Lice present at last shearing
Lice possibly present at last shearing
No lice at last shearing

Treatment values

Studies have shown that overall, any particular treatment on-farm, applied by the 'average' wool producer has a 65% chance of eradicating lice. Obviously this varies greatly between producers, with the type of treatment, and the standard of application. You can use this probability or obtain a more precise estimate applicable to your property by using the Treatment Factors Tool then entering the results here.

Probability of eradication if lice were present %

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