Just make sure you put all items (food, scented toiletries like toothpaste and chapstick, etc...) in one of the bear boxes" provided at every camp site and trailhead parking area. (A bear box is a big metal bin with latches to keep the bears out.)You can carry food with you while you hike, but do NOT leave food wrappers, purses, backpacks or other items visible in your car.