Bear spray expiry dates: good news, and comical peer-reviewed pseudoscience
A recent analysis of bear spray expiry dates reveals that the active ingredient, capsaicin, does not degrade over time. Propellant leakage is the primary concern, which can be monitored by weighing the can. However, a peer-reviewed study from Brigham Young University has been criticized for flawed methodology, misinterpreting aerosol can physics and incorrectly concluding that head pressure declines rapidly. AI
