Children under 12 can be allowed to use sparklers with adult supervision. Children under five shouldn’t be allowed to use a sparkler at all. They are generally too young to really understand the dangers of what they are holding. Babies and very children can reach out or wiggle in your arms so make sure that if you are holding a baby and a sparkler that you keep them both far apart. When children use packs of sparklers it’s important to explain why they are dangerous and what they should do to stay safe.