Sawyer permethrin clothes spray works for me. You spray it on your clothes and let it dry before wearing them. You still need to use deet on your exposed skin. I usually keep a set of pants, shirt, and a couple of pairs of socks just for woods wear. The stuff claims to be effective through several washes. I do know that it is good on ticks, chiggers, and mosquitos.
http://www.amazon.com/Sawyer-Permet...ds=Sawyer+Permethrin+Pump+Spray+-+24+oz.