VPA 221: Veterinary Entomology and Acarology (1+1)

TREATMENT - Psoroptes ovis

• Dipping is best
• Chlorinated hydrocarbons prohibited because of insecticide residues
• Organophosphorous compounds can be used
  • Malathion/Sumithion - 50 EC
    • 20 ml of 50 EC m/s is 1 lit.H₂O = 1.0 %
    • 20 ml of 50 EC m/s in 2 lit.H₂O = 0.5 %
  • Zolone
    • 35 EC – 5 ml is 345 ml H₂O = 5%
    • 20 EC – 5 ml is 195 ml H₂O = 5%
• Deltamethrin (Synthetic pyrethroid) – Butox- 4 ml is 1 lit H₂O = 1% solution, Residual effect- 15 days