A horse I had several years ago came up one evening shaking his head and just acting aggitated. He kept trying to rub the top of his head on me, which was odd for him, so I was scratching him trying to get whatever was bothering him...then I saw it. His one ear was FULL of seed ticks. I mean the entire inside of the ear. He was a bay so the ears were black and with the hair, I just couldn't see them. I felt horrible for him! Frontline spray was popular at that time so I just sprayed some on my fingers and kept rubbing his ear, they dislodged on their own for the most part and it made it pretty easy to get them out. It just made my skin crawl!