You're probably gonna get an occasional tick on you no matter what you do. As Herber suggested treating clothes with permithrin seems to keep them at bay pretty well, but you will need to periodically check over your entire body when you are hiking just to make sure one hasn't gotten on you. Even with treated shoes/boots and gaiters I still find them on me once in a while. Usually they are up in the groin area or on my thighs underneath my shorts. They love those dark little corners.