Sawyer Permethrin. Ticks hate the stuff. Spray it on all your gear, let it dry, and you're good to go. It's even good for several washes. I didn't get bit or find a single tick on my skin last year, when I had clothing sprayed with permethrin.
I'd opt for the spray bottle vs the aerosol can, it sprays better, and doesn't get on your hands like the aerosol can does.