Bug zappers are found in millions of backyards, and their characteristic zap sound lets us know that they’re hard at work, killing thousands of pesky bugs per night. But which bugs are they killing? It turns out that very few mosquitoes and other biting insects are harmed by bug zappers, which mostly attract beetles, fireflies and other harmless critters. And, even worse, bug zappers have the potential to spread disease to humans. To find out more, check out our new article on Bug Zappers.