West Feeds West Fly Block

West Feeds West Fly Block

West Feeds

  • $18.99
    Unit price per 

This 33 lb. pressed block has 20% protein and contains a cottonseed meal as the primary protein source along with grains, grain by-products, and roughage products. May be fed free choice to cattle and horses.

Methoprene, an Insect Growth Regulator, is formulated into the block as the active ingredient to prevent the breeding of horn flies in the manure of treated cattle and horses.

Feeding Instructions

Feed free choice to all types of cattle and horses. Either should consume 4 ounces per head per day. Locate minerals where livestock congregate. Replenish regularly.

*Active Drug Ingredients: (S)-Methoprene (CAS # 65733-16-6) – A nutritional supplement containing S-methoprene insect growth regulator to prevent the breeding of horn flies in the manure of treated cattle.

Guaranteed Analysis

  • Crude Protein (Min)20.00%
  • *(S)-Methoprene0.01%
  • Crude Fat (Min)1.50%
  • Crude Fiber (Max)12.00%
  • Calcium (Min)5.00%
  • Calcium (Max)7.00%
  • Salt (Min)6.00%
  • Salt (Max)8.00%
  • Phosphorus (Min)0.60%
  • Magnesium (Min)0.30%
  • Zinc (Min)700 PPM
  • Manganese (Min)450 PPM
  • Copper (Min)125 PPM
  • Selenium (Min)3 PPM
  • Vitamin A (Min)12,000 IU/LB
  • Vitamin D3 (Min)6,000 IU/LB
  • Vitamin E (Min)16 IU/LB


Mono-Calcium Phosphate, Calcium Carbonate, Sodium Selenite, Cane Molasses, Salt, Grain By-Products, Plant Protein Products, Manganese Sulfate,

Manganous Oxide, Copper Sulfate, Copper Oxide, Zinc Oxide, Zinc Sulfate, Ferrous Carbonate, Potassium Chloride, Ferrous Sulfate, Cobalt Carbonate, Vitamin A Supplement, Vitamin D Supplement, Vitamin E Supplement, Ethylenediamine Dihydriodide, and Red Iron Oxide.

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