Viper Pour-On Guarantee Registration

REGISTERED INDICATIONS

Viper^TM is registered for the control of neonicotinoid susceptible and IGR resistant strains of body lice (Bovicola ovis) when applied to shorn sheep up to 7 days off shears and unshorn lambs from 2 weeks to 2 months of age. Viper protects sheep from re-infestation with lice for 4 weeks after treatment when applied within 24 hours of shearing.

RAPID
KNOCKDOWN

Viper provides rapid knockdown control² of neonicotinoid susceptible and IGR resistant strains of sheep body lice.
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NEXT GENERATION CHEMISTRY

Viper contains next-generation neonicotinoid chemistry that is up to six times more potent than imidacloprid.^1,2,3 Thiacloprid’s unique mode of action provides rapid knockdown control of lice.
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6 MONTH OFF-SHEARS GUARANTEE*

Elanco guarantees that when Viper is applied according to the label directions to sheep off-shears, there will be no detectable lice present on sheep six months after treatment.*

To qualify, simply register your purchase within 14 days of application and apply Viper in accordance with the label directions.
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USER-FRIENDLY FORMULATION

Viper is a low odour, water-based formulation that is easy to apply with the recommended applicator and clean up after use.
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4 WEEKS
PROTECTION

Viper provides effective lice control when applied off-shears. Extensive research and commercial experience have confirmed lice will not re-infect sheep for 4 weeks after application off-shears when Viper is applied within 24 hours of shearing.

Viper continues to kill adult lice and emerging nymphs that hatch from eggs to four weeks after treatment when applied within 24 hours of shearing.
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GOOD MANAGEMENT PRACTICES

Good management is critical for effective lice control.

Viper will provide protection against re-infestation for four weeks when applied within 24 hours of shearing.
Treat all sheep on the property at the same time. Avoid split shearing.
Muster each paddock thoroughly to ensure all sheep are treated.
Conduct a second muster if necessary.
Check boundary fences to prevent untreated or lice-infested sheep from joining treated mobs.
Do not mix treated sheep with untreated sheep for at least six weeks after treatment.
Do not mix treated sheep with lousy sheep or those of unknown lice status.
Ensure sheep are cleanly shorn. Grass seeds, lumpy wool or flystrike can hinder shearing and may reduce efficacy.

Avoid treating ewes less than six weeks before lambing commences or while ewes are lambing or have lambs less than two weeks of age at foot, as lice can persist and infest lambs.
If ewes have lambs aged two weeks to two months of age at shearing time, shear and treat the ewes and also treat the lambs as an unshorn lamb. If lambs are greater than 8 weeks of age then shear and treat the lambs using the off shears dose rate table.