Your chart lists pepper spray, but there's a difference between bear spray and pepper spray. Pepper spray is generally marketed for people. There's a difference in the levels of of Capsicum. And, you need to be careful about the bear type upon which it's being tested. Brown vs. Black makes a big difference. On the east coast, it's black bears that we're concerned with. From the same link you posted: "The study did find that the spray was effective in 20 of 20 encounters with curious bears. "
https://pubs.usgs.gov/...18/pdf/FS09-3018.pdf
been effective in fending off threatening and attacking bears and
preventing injury to the person and animal involved. The proper
use of bear spray can reduce the number of bears killed and reduce
injuries to people caused by bears (from the Interagency Grizzly
Bear Committee at http://www.IGBConline.org).
https://pubs.usgs.gov/...18/pdf/FS09-3018.pdf
Quote:
No deterrent is 100-percent effective, but bear spray has been effective in fending off threatening and attacking bears and
preventing injury to the person and animal involved. The proper
use of bear spray can reduce the number of bears killed and reduce
injuries to people caused by bears (from the Interagency Grizzly
Bear Committee at http://www.IGBConline.org).