LiceBoss Treatment Factors Tool

Introduction

This program works through your method of treatment, asking about some of the issues that could lead to treatment failure. This may be useful if you are not sure whether your treatment was good enough to eradicate lice, or if you have had a treatment failure and want to check where it might have been inadequate. If you use different methods for different groups of sheep then evaluate each method separately.

The program calculates the probability of eradication of lice, if they were present. It does not attempt to estimate whether lice were actually present or not. Use the Short Wool Lice Tool to assess the risk that the flock had lice.

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

Method

Lice treatment after last shearing

Not known
No treatment
Backliner
Dip (plunge, shower or cage)
Other treatment

Type of dip

Unknown
Plunge
Shower
Cage

Chemical used

Not known
Diazinon (OP)
Temephos (OP)
Synthetic pyrethroid (SP)
IGR
Spinosyn
Neonicotinoid
ML
Other

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All Methods

Reason for treatment

Reason for treatment not known
Flock had no lice but treated anyway
Lice not seen but possibly present
Lice seen in flock but little wool damage
Moderate or severe wool damage due to lice

Complete muster

No information
Checked carefully for woolly sheep after shearing
Didn't notice any woolly sheep after shearing
Some sheep could have been missed
Some sheep missed shearing

Shearing time

Shearing dates not known
All shearing within 6 weeks including rams
All adults at the same time, lambs separate
Ewes and wethers at different times
Many separate shearings

Cleanly shorn

No information on shearing
Experienced shearers, not rushed, cleanly shorn
Most shorn OK, but a few with wool left
Many sheep roughly shorn

Extras unshorn or untreated?

No information on any unshorn sheep
No sheep left unshorn and untreated
A few sheep not shorn and treated (rations, dogmeat, culls)
Several groups of sheep not shorn and treated with others

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Ewes & Lambs

Ewe Shearing & treatment?

No information on ewe shearing
No ewes and/or no lambs
Ewes shorn in early pregnancy
Ewes shorn within 6 weeks before lambing
Ewe shorn with lambs at foot
Ewe shorn when dry

Lamb Treatment?

No information on lamb treatment
Lambs treated before weaning
Lambs treated within a month after weaning
Lambs shorn & treated well after weaning or sold unshorn

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Backliner

Dose rate

No information on dose rate
Dose calculated and applicator tested
Dose rate calculated but applicator not checked

Sheep weight

Sheep weight not checked
Sheep weighed and dosed to heaviest sheep
Sheep weighed and dosed to average weight

Coverage

No information on treatment
Every sheep poll to tail and evenly down the back
A few sheep not poll to tail
A few sheep not evenly down the backline
A lot of sheep not fully covered

Longest period between shearing and backlining

Period from shearing to backline unknown
All backlined less than 24 hrs after shearing
Some over 24hrs, but less than 7 days
Some sheep up to 4 weeks
Some sheep over 4 weeks

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Dip

Longest period between shearing and dipping

Period from shearing to dipping unknown
All sheep dipped in under 6 weeks
Some sheep up to 9 weeks
Some dipped more than 9 weeks after shearing

Was every sheep re-mustered for dipping?

No information
Checked carefully so no sheep missed
Didn't notice any sheep left behind
Some sheep could have been missed
Some sheep not mustered for treatment

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Dip Mix

Dip/Sump volume

No information on volume calculation
Volume measured or known precisely
Volume guessed
Remembered volume from previous years

Topping up including continuous replenishment

No information on topping up or replenishment
Dip topped up/replenished at higher than initial rate
Dip topped up/replenished with the same as initial rate
Dip topped up/replenished at lower than initial rate

Dip dilution

No information on dip concentration
Calculated exactly from label
Mixture prepared from memory
Dilution written down previously
Estimated the volume of chemical to add

Dipping out

No information on dipping out
Extra chemical added when volume dropped at the end
No extra chemical added when volume dropped

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Plunge Dip

Swim length in the dip

No information on dip length
At least 9 metres
About 7 or 8 metres
About 5 or 6 metres
Less than 5 metres

Was the volume in the dip always enough?

No information on dip volume
Volume was always enough to cover sheep
Sometimes the volume was not enough to cover sheep
The volume was often too low to cover sheep

Number of times sheep dunked

Number of dunks not known
Every sheep dunked twice
Every sheep dunked once
Some sheep were not dunked

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Shower Dip

Type of dip?

Not known
Round shower dip
Rectangular shower dip

Pump pressure?

No information on pressure
Pressure over 400 kPa
Pressure 200-400 kPa
Pressure less than 200 kPa

Boom rotation speed (rpm)?

Boom rotation not known
Boom slower than 5 rpm
Boom rotation 5-12 rpm
Boom faster than 12 rpm

Check top nozzle function?

No information on nozzle functoion
Nozzles checked and working correctly
Most nozzles OK
Several nozzles partly blocked

Did the boom cover the entire area?

No information on coverage
Boom sprayed over the entire area above sheep height
Boom covered all but the edges
Boom coverage was poor

Could the sheep move in the dip?

No information on sheep movement
Sheep were able to move easily in the dip
Sheep were well packed but still able to move
Sheep were packed tightly and could not move

How long were the sheep in the shower?

No information on length of shower
12 minutes with top nozzles
9 to 12 minutes with top nozzles
6-9 minutes under top nozzles
Top nozzles were run for less than 6 minutes

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Cage Dips

Number of times sheep dunked

No information on number of dunks
Every group dunked twice
Most groups dunked twice, some only once
Every group dunked once

Was the volume in the dip always enough?

No information on dip volume
Volume was always enough to cover sheep
Sometimes the volume was not enough to cover sheep
The volume was often too low to cover sheep

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SP Treatment

In how many years has an SP been used over the last 5 years

No information on SP use
SPs not used more than once in the last 5 years
SPs used three or four years in the last 5 years
SPs used every year for the last 5 years

Any lice after SPs on this property

No information on lice after SP use
Lice never found within 8 months after SP use
Some sheep with lice 6-8 months after using SP
Lice seen on sheep less than 6 months after an SP

SP resistance on this property or neighbours

No information on SP resistance
No resistance to SPs reported in this area
SP resistance has been suspected in this area

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IGR Treatment

In how many years has an IGR been used over the last 5 years

No information on IGR use
IGRs not used more than once in the last 5 years
IGRs used three or four years in the last 5 years
IGRs used every year for the last 5 years

Any lice after IGRs on this property

No information on lice after IGR use
Lice never found within 8 months after IGR use
Some sheep with lice 6-8 months after using IGR
Lice seen on sheep less than 6 months after an IGR

IGR resistance on this property or neighbours

No information on IGR resistance
No resistance to IGRs reported in this area
IGR resistance has been suspected in this area

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