Updated: February 17, 2023

Earwigs are insects of the order Dermaptera, known for their pincer-like appendages located at the end of their body. These insects are commonly found in gardens, under rocks or debris, and in crevices of buildings. They are mostly active at night and prefer dark and moist habitats.

There is a common belief that the full moon has an effect on earwigs and can actually repel them. In this article, we will examine the behavior of earwigs, their habitats, feeding habits, and reproductive cycle. We will also delve into the history of full moon beliefs and explore whether or not there is any scientific evidence to support the idea that the full moon repels earwigs.

Earwig Behavior

Earwigs can be found throughout the world and are known for their preference for dark and humid environments. They are most commonly found under rocks or in other debris, as well as in crevices of buildings. Earwigs feed on both plants and other insects, making them omnivorous. They can cause damage to plants by feeding on leaves, flowers, and fruit.

Earwigs have a unique reproductive cycle as females protect their eggs until they hatch into nymphs. The mother earwig will fiercely defend her young against predators until they mature into adults.

Full Moon Beliefs

The full moon has been associated with many beliefs throughout history. Many cultures believed that the full moon could affect human behavior, leading to an increase in criminal activity or even causing people to turn into werewolves. However, there is also a belief that the full moon can repel earwigs.

It is thought that the light emitted from the full moon can interfere with the circadian rhythm of earwigs, causing them to become disoriented and avoid places with a lot of moonlight.

Scientific Evidence

Despite widespread belief in the full moon’s effect on earwigs, there is little scientific evidence to support this idea. In fact, studies have been conducted to test this theory with varying results.

One study published in the Journal of Insect Science found that there was no significant difference in earwig behavior during a full moon compared to a new moon. Another study conducted by researchers at Purdue University found that earwigs were actually attracted to light and were more active during nights with a bright moon.


In conclusion, while there may be a belief that the full moon can repel earwigs, there is little scientific evidence to support this idea. Earwigs are attracted to light and prefer dark and humid habitats, making it unlikely that a bright moon would deter them. It is important to understand the behavior of these insects to effectively control them in your garden or home.