Fireworks safety

CHECK YOUR STATE OR LOCAL MUNICIPALITY ON THEIR FIREWORKS CONTROL LAWS. Some states allow all Class C fireworks; some allow only sparklers and/or snakes; some have no fireworks laws, except at county or city levels; and some ban all Class C fireworks.
CHECK FOR THE MANUFACTURER'S LABELING. All Class C fireworks must have proper warnings printed on the package. Specific language is required for Fountains, California Candles, Spike Fountains, Handle Fountains, Roman Candles, Rockets with Sticks, Wheels, Illuminating Torches, Sparklers, Mines and Shells, Whistles without Report, Party Poppers, and Missile-Type Rockets. Cherry bombs, aerial bombs and M-80 salutes have been illegal for many years. Firecrackers containing more than 50 milligrams of powder are now illegal except for those used as part of a rocket.

FOLLOW THE FOLLOWING CHECKLIST FOR SAFETY.

Always read the directions.
Always have an adult present for proper supervision.
Never experiment, take fireworks apart, mix anything with fireworks contents, or try to make fireworks yourself.
Always light fireworks outdoors in a clear area away from houses and away from flammable materials.
Light one device at a time.
Keep a bucket of water nearby for emergencies.
Keep at a safe distance after lighting devices.
Dispose of fireworks properly; soak malfunctioning devices with water.
Never allow small children to handle fireworks.
Always store fireworks in a dry, cool place and avoid rough handling that might damage the fuse or handles.
Always allow enough room for proper function; never ignite fireworks in metal or glass containers.

Source from: United States CONSUMER PRODUCT SAFETY COMMISSION
https://www.cpsc.gov/Newsroom/News-Releases/1977/Fireworks-Safety-For-The-Holiday-Season