Our troop recommends the use of Permanone applied to clothing when hiking or camping to keep the bugs (ticks especially) away. Permanone uses Permethrin.

It works.

I went with 40% DEET on arms and legs for my night out at the OA campout and got 2 tick bites under my clothes for my trouble.

I read with interest that the DOD is having field uniforms made with Permethrin to keep the bugs (mainly mosquitos) away. Maybe it will come to a scout uniform near you one day.