PLEASE HELP! Our horses are in optimum health, excellent living conditions, and fed and groomed regularly. We have no birds/chickens or other lice carrying animals.
But we've been having trouble with sucking lice in our horses all winter. We've been treating them with Ivermectin regularly; it works great, but the lice are back in full force within the next month, and the horses are back to itching their fur off and scratching all the time. Ivermectin has worked far better than the powder so far. But the infestation is persistant, refusing to be totally killed off. It's like a host of eggs stick around just to hatch out again 30 days later!
Frequent treatments just seem to be a waste of time, nothing more than a deterrant to the little monsters. What I'm wondering is wheather or not the Lice will go away when they shed their winter coats. Will the summer heat and sleek horse coats drive away the villains? Does anyone have any previous experience with this? Will they be easier to EXTERMINATE when summer comes around?