bear spray Study Finds Bear Spray Still Effective In Winter Conditions By Ashley Piccone • Oct 20, 2020 Chuck Bartlebaugh A new study finds that bear spray is still effective in wind and cold. The study, led by Brigham Young University, tested bear spray range for different conditions that might occur in harsh climates. Bear Spray: Requirement Or Education? By Kamila Kudelska • Apr 9, 2019 YNPS via Creative Commons Attribution 2.0 Generic license. A coalition of environmental groups signed a petition that would require Idaho and Wyoming hunters to carry bear spray. But some think protocol and education is more effective. Conservationists Want Hunters To Carry Bear Spray In Grizzly Country By Amanda Peacher • Apr 5, 2019 A coalition of conservationists is petitioning Idaho and Wyoming to make hunters carry bear spray when they’re within the Yellowstone ecosystem. Listen Listening... / Click 'play' to hear the audio version of this story.