IIRC, all BBNP's trash bins are the "bear proof" kind. The established camp sites have bear proof metal cabinets for food, too.
Yes, I know about the "bear proof" containers. The bears still smell food. They still have people feeding them. They still have a high population density of bears. We fix those issues with a common sense approach.
Our way? No trash cans inside or outside...pack it in, pack it out. I was very skeptical when I started working at this park...but it works. We actually have much less litter than we had back when we had trashcans. We fine anyone caught feeding wildlife. We also have bear hunting areas and seasons that keep the population density down and keep them afraid of humans. If you are camping, you hang your food away from your site and do your dishes away from your site.
These methods keep our bear population at the proper level (we still have about 300 bears in my park) and bears away from humans. We haven't had any problems. Certainly not like the NPS parks. We don't have to shoot bears like the NPS does. We don't have attacks.