Thanks for all the advice guys!
Ryle, I dewormed him with Ivermectin deworming about 10-8 weeks ago. (He didn't have ticks then) Since he now has ticks does this mean that the deworming is not working on him correctly? Should I try another type of dewormer or deworming program on him? None of the other horses have ticks with, even the ones he was penned with.
I will definitely look into getting some Frontline Spray! Thanks for all the information!