Stay away from illegal explosives. Illegal explosive devices continue to cause serious injuries around the Fourth of July holiday. Federally banned since 1966, these items will not contain the manufacturer's name and are usually totally unlabeled. Don't purchase or use unlabeled fireworks. If you are aware of anyone selling such devices, contact your local police department.
Homemade fireworks are deadly.
Never attempt to make your own devices and do not purchase or use any kits that are advertised for making fireworks. Mixing and loading chemical powders is very dangerous and can kill or seriously injure you. Leave the making of fireworks to the experts.