We will be going on day hikes and like to carry lunches in a backpack that is with us at all times (never keep food items in the car) Do we need to put our lunches in a bear proof canister inside the backpack, and if so can ones small enough to fit in a small pack be rented in the park? After a rather intimidating encounter with a bear in the Smokey Mountains we have a very healthy respect for bears and other wildlife! I know we are going to be in their territory and just want to do the right thing. Should I make sure not to wear scented sunscreen, etc? I guess it is obvious that while I look forward to getting out on some good day hikes I don't want to encourage close encounters with bears during our mid October visit. Thanks!