Do you recommend getting bear spray for doing day hikes in \Yellowstone and the Tetons? We will be flying in so we cannot bring any. I assume it is available in Jackson or possibly at the stores in the national park. Is it available and where? We would have to buy it and then give it away when we leave..... Do you recommend buying it? What do you think? Do the trails have enough traffic on them for us not to worry..... We do have bear bells on our backpacks for noise.