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What do they treat?

√ Premises flies

For controlling adult house flies and stable flies in and around agricultural animal facilities.

Note: √ Highly toxic to invertebrates and algae. Dangerous to bees.

How can they be administered?

A variety of application methods for administering pesticide products to cattle are in use.

√ Premises surface spray √ Bait


Reported in: √ House flies (detected overseas, untested in Australia)

Avoid repetitive use of the same chemical group (Spinosyns belong to IRAC Mode of Action group 5) to avoid the build-up of resistant individuals within populations.

What is resistance?


Everyone working in the rural industry has a ‘duty of care’; a legal obligation to provide a safe workplace for everyone on the property.

  • Spinosyns are generally regarded as compounds of low toxicity to humans and mammals.

Withholding periods are mandatory with all registered veterinary products used to treat animals for internal and external parasites.

Types of spinosyn

A guide to the different chemical actives and the pests they affect are in Table 1. See choosing and using products for the premises for advice on the appropriate formulation and application method for your target pest.

Table 1. Spinosyn, active and the targeted parasites for which the actives are registered for.

Chemical Pests targeted (may vary with formulation)
Worms Premises flies* Ticks Lice Mites

*IRAC Mode of Action group 5

What are they?

Spinosyns are broad spectrum insecticides produced by two species of soil bacteria.

How do they work?

Spinosyns are fast-acting compounds that cause involuntary and prolonged tremors in the insect nervous system bringing about irreversible paralysis and death.

Spinosad is absorbed via ingestion with lesser amounts absorbed across the insect cuticle through direct exposure.

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