EARTH FRIENDLY]Yes, all our paper confetti is biodegradable. So, depending on the weather, it could take weeks for nature to do its thing. (Biodegradable does not mean instantly dissolves in water) All our party poppers confetti shooters are flameproof and uses compressed air as the propellent with several safety features built-in! (not permitted for air travel) Be sure to follow directions on the box or every cannon. A simple, yet firm twist is all that is required for activation…just prepare for a loud 'pop!