Almost all coated clothes use permethrin or a similar pyrethroid. It's fairly effective but I often have issues with ticks coming off my dog much later and getting on me. I look forward to this (or a lyme vaccine) making it to market - the ticks are already pretty bad this year in the midwest.

Watch for long grass along deer trails. During a particularly bad tick year (Wisconsin) I could walk along the deer trail by our swamp and just count the ticks hanging out on the ends of the green swamp grass. I did not spend much time outside that spring.