The Bexar County jail facilities are at 200 North Comal in downtown San Antonio. In late 2012, press reports noted an increase in the number of suicides at the facility. The issue was a topic of debate in the election for sheriff that year.
A polar bear has one of the best noses in the entire world and are well known to have an incredible sense of smell. Polar bears have been seen walking in a straight line for 32km (20 miles) to food, with only their nose to guide them. Polar bears have also sniffed out a seal ten football fields away that was hidden under 1m (3') of ice.
Stinky smells will deter them. I have camped most of my life and when I camp in a region with bears I use Raid or Black Flag around my camp and spray my tent as well. I don't get bears nor bugs. I know it works because I have stayed in camps where bears freely roam and would break into camps when they smelled food.