The Guard Alaska bear repellent spray is simply the best bear repellent available. It is the only spray that is registered with the EPA (Environmental Protection Agency) as a repellent that is an effective repellent for all species of bear!
Bear repellent sprays are more effective against bears than guns. This spray will not do any long term damage to the bear, but will effectively scare off bears that could attack you.
In fact, the Sierra Club wants it to be a requirement for anyone who goes into a national forest where grizzly bears are known to live to carry a bear repellent spray.
Bear sprays are particularly effective because they spray at least 15 feet away, so you can use these sprays long before the bear is close enough to do any damage.