JustiFLY® Feedthrough 3% Larvicide - 12-oz. Add-Pack

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Product Number: C34673

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Insect growth regulator (IGR) larvicide breaks the life cycle of horn flies, disease-carrying face flies, biting stable flies, and nuisance houseflies for pennies per head, per day. Larvicide is priced to allow beef and dairy producers cost-effective fly control by stopping the larvae from developing once in contact with treated manure. Provides full-season, broad-spectrum fly control while letting cattle producers utilize their own specific mineral choice - there's no longer a need to change minerals to economically include fly control.

  • Controls 4 major fly types in manure of pasture and confinement cattle and calves, including veal calves
  • Mixes with feed or mineral supplements to pass through digestive tract and into feces in sufficient concentration to kill fly larvae
  • Reduces animal-handling stress
  • No withdrawal period, residues, or resistance issues
  • May be used in an integrated fly control program
  • Approved for all beef and dairy calves and cows (including lactating cows)
  • Contains no harsh chemicals
  • Contains 3% diflubenzuron
  • 12-oz. add-on pack treats one 50-lb. bag of free choice mineral


  • 3% diflubenzuron
  • 12-oz. pack (360 g)
  • EPA approved
  • Nontoxic

Item Weight: 0.88
Assembly Required: false
Species: Cattle
Prop 65:
Brand: JustiFLY


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