The GUARD ALASKA® BEAR SPRAY ultra hot pepper spray has proven so effective at repelling bears, it is the only one registered with the EPA as a repellent for all species of bears! It is absolutely the most effective and powerful bear defense spray available. It is safe for the environment in that it does not contain flammable or ozone depleting substances. The formula is scientifically proven superior, and it even works on wet bears because the specific gravity of the carrier is heavier than water. Endorsed by the Alaska Science & Technology Foundation. 9 oz. Supersize. Range: 20 ft.