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Quick-Reference Guide: Y-TEX Insecticide Ear Tags

🐄 Quick-Reference Guide: Y-TEX Insecticide Ear Tags

Insecticide ear tags, like those from Y-TEX, provide long-lasting protection against horn flies, face flies, ticks, and lice. These slow-release cattle tags reduce stress, improve weight gain, and save producers time by eliminating the need for frequent reapplication. Learn how different Y-TEX Insecticide ear tag types work, the importance of annual rotation to prevent resistance, and best practices for effective application.

How They Work

  • Slow release of insecticide over 3–5 months

  • Distributed naturally by grooming & movement

  • Kills/repels horn flies, face flies, ticks, lice

  • Rotate classes yearly to prevent resistance


Step 1: Choose the Right Tag by Insecticide Class

Insecticide Class Y-TEX Tag Examples Control Duration Best For
Organophosphate (OP) MAX 40™, OPtimizer 4–5 months Excellent for horn flies (esp. pyrethroid-resistant), some ticks
Pyrethroid PYthon® II, PYthon Magnum, GardStar® Plus 3–5 months Horn flies, face flies, lice; safe for lactating cows
Macrocyclic Lactone XP 820™ 3–5 months Resistant horn flies, ticks, lice; boosts calf weight gains
Combination (Multi-class) Tri-Zap™ (pyrethroid + macrocyclic lactone) 2–4 months Broad-spectrum control; safe for calves & dairy

Step 2: Follow a 4-Year Rotation Plan

(to minimize resistance and keep products effective)

  • Year 1: Tri-Zap (combination)

  • Year 2: MAX 40™ / OPtimizer (organophosphate)

  • Year 3: PYthon® II or GardStar® Plus (pyrethroid)

  • Year 4: XP 820™ (macrocyclic lactone)

➡️ Then repeat cycle


Step 3: Application Tips

  • Use UltraTagger® applicators for secure placement

  • Apply 2 tags per animal with some tags for full protection (esp. ticks)

  • Right ear: visual ID tag

  • Left ear: insecticide tag (or EID, depending on state rules)

  • Remove & replace tags at end of labeled effective period


Pro Tip: Keep spare buttons & tags on hand. Remove old tags before reapplying to maintain effectiveness.

📖 Full product details: Y-TEX Insecticide Ear Tags Catalog

Shop Insecticide Ear Tags

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