Yes, they are legal in Katy, Tx..... Unfortunately! I'm actually considering going to City Council to try to put a stop to them. They were legal when Katy was a po-dunk town and now it's a thriving City with no place for such hazards. Too much property and too many folks are getting hurt.
My neighbors are very rude and refuse to stop setting them off until all hours of the night. My City doesn't even have a disturbing the peace law, so I have no recourse other than calling in a fire hazard to get them to stop. If they are careless and shooting them at cars driving by, then that's when it becomes an issue.
It's soooo ridiculous! In Houston tomorrow night, Disney is putting on the Grand Fireworks Show, so it should be nice and controlled...