A late-night bathroom visit quickly became unsettling when a loud insect slammed into the light and began flying wildly around the room. Its size and noisy movements made it look alarming at first, leading to fears of something dangerous or disease-carrying. However, the unexpected visitor turned out to be a cockchafer, also called a May bug, rather than a harmful pest.

Although the insect appears intimidating, cockchafers are harmless to both humans and pets. They do not bite, sting, or spread venom, and they are not interested in invading homes. Their large mouthparts are designed for feeding on leaves, not for defense. Most often, they simply wander indoors after becoming attracted to bright lights at night.

Cockchafers are nocturnal insects active during late spring, when they emerge for a short mating season. During these weeks, they fly clumsily at dusk and are easily drawn toward warm, illuminated rooms through open windows or vents. Their loud buzzing and awkward flying can make them seem more threatening than they actually are.

Experts recommend remaining calm if one enters the house. Turning off indoor lights and opening a window usually helps the insect find its way back outside. If needed, it can be gently trapped with a cup and released near trees or bushes. Beyond being harmless, cockchafers also benefit the environment, as their larvae improve soil quality and provide food for birds, bats, and hedgehogs.