Adhere to instructions
FLOCKMASTERS are urged to adhere to makers instructions for the use of non-organophosphorus (non-OP) dips to reduce the risk of dip-resistant scab mite.
Youngs Animal Health issues its advice after reports of scab mites surviving plunge dipping with flumethrin-based non-OPs.
Youngs claims no cases of resistance in pre-launch trials of its pyrethroid-based non-OP dip Robust. But it acknowledges the risk of resistance developing. It advises combating this risk by:
• Mixing dip at the correct strength.
• Dipping sheep for a full minute with two full immersions.
• Topping up the dip as recommended.
It also suggests using different groups of ectoparasiticides in rotation. *