I actually did a little research on expired flares to see what folks have to say about them. Seem the EPA has once again started a requirement without any way to dispose of them after their expiration dates. You are required to have them by the Fed rules for boating in large water, but there is absolutely no place to dispose of them. And since they now are considered toxic waste, the EPA has made the usual places stop taking them. Emergency Crews, Firefighters, and typical emergency group will no longer accept expired flare under penalty from the EPA. And you are not supposed to even throw them into the normal trash can either. So it seem if you follow the latest RULES, you can't get rid of them anywhere. But I would most certainly fire them off for the fun of it and take my chances. But not on the water... JMHO!