OPtimizer Insecticidal Ear Tag

OPtimizer insecticidal ear tags for cattle contain a highly-active long-lasting formula that controls Buffalo Fly, including pyrethroid-resistant strains, for up to 16 weeks.

Product type

Fly Tag

Active ingredient

Diazinon 200g/kg

Pack sizes

20tags, 100tags, 500tags

Pest type

Buffalo Fly (Haematobia irritans exigua)

Withholding periods

Meat Nil
Milk Nil
Export Slaughter Interval Zero


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Advantages of OPtimizer Fly Tags

  • Fly Tags are the only fly treatment that give sustained long-term control of Buffalo Fly — sprays and pour-ons only have temporary results. 
  • For use on both beef and dairy cattle, including lactating dairy cows.
  • Rainfast and dipfast ensuring long lasting results.
  • An integral part of Y-Tex insecticidal tag rotation program to minimise insecticide resistance.
  • Environmentally friendly form of insecticide application as there is no risk of spillage and overdosing.

All Y-Tex fly tags need to be applied using the Y-Tex Ultra Tagger or by using the Y-Tex Adaptor Pin with another tagger.

What are Buffalo Flies?

The blood-sucking Buffalo Fly can cause severe irritation in cattle affecting weight gain, milk production and hide value

The Y-Tex Insecticidal Ear Tag Strategy

An insecticidal ear tag rotation strategy is important to prevent flies becoming resistant to commonly used insecticides.

The economic benefits of Buffalo Fly control

Implementing a long-term fly control strategy has many positive economic benefits.