Usually fly tags will take care of ear ticks. I used Corathon tags by Bayer this year and they weren't very effective. I put a 15 gallon sprayer in my Gator with insecticide spray and I spray whenever I get the opportunity. This round I've used Pyranha fly spray and have a jug of CoRal waiting. I've also put out back rubbers and keep them charged with an insecticide mix.