Hello. My goat wether has mites, I believe C. bovis due to the infection location being on his legs. I had been treating this with Nustock, however, I do not feel confidence it's safe to be applying it in the cold weather we have been having lately. Unfortunately his mites are getting worse, and it's beginning to affect his fur quality, so I'm looking into injectable treatments.

I am concerned about ivermectin and cydectin resistance. My farmowner had me treating my wether with oral ivermectin at 25 day intervals. He showed improvement for the first dose, some improvement second dose, no improvement for 3rd and 4th doses. Additionally, we have cydectin-resistant barberpole worms on our farm, so I'm concerned about mite resistance to cydectin as well.

Is there a possibility of these mites being resistant to injectable ivermectin if my wether has been receiving oral ivermectin? If so, do you have a medication for ectoparasites I can use, as well as instructions on use? I've been looking at Dectomax but there is no label for use in goats, only sheep at 1ml/50kg, and this is for sheep scab, so a different parasite to my understanding.

I would appreciate some guidance on this. Thank you.