BEWARE: Statistics show sparklers cause the most injuries Published July 2, 2018 Danielle Miller's Reports FOX 10 Phoenix Facebook Twitter Print Email PHOENIX (KSAZ) - A holiday warning, just in time for the 4th of July: watch out for sparklers. They look innocent enough, but every year, nearly 13,000 people end up in the emergency room with injuries. FOX 10's Danielle Miller reports.