Cicada 2024 Facts About. These cicadas are harmless to humans and pets—they cannot sting, bite, or pinch—but there will be many millions of them. The periodical cicada emergence of 2024.

Although, they won’t all surface at the same time. For the first time in 221 years, this spring will see billions, if not trillions, of cicadas take to the skies in a rare synchronized.