Disposable compressed gas air horns have proven to be unreliable and are extremely bad for the environment. A single 5 oz. can will only last a minute or so at best, it may not work at all in cold weather, and its sound volume diminishes the longer you use it. It also uses an extremely potent greenhouse gas as a propellant.
The WoodsCan Hornet rechargeable electric air horn only uses air, it will reliably deliver 121 decibels of sound for 35 minutes per battery charge and the sound volume will not diminish, even in cold weather. This gives you the freedom to not have to use the Hornet sparingly, nor worry that it will let you down at a crucial moment.
