Updated: March 25, 2023

Earwigs are common pests that can infest homes and gardens. They are known for their long, slender bodies and pincers on their back end. While they are not harmful to humans, they can cause significant damage to plants and crops. As a result, many people are constantly searching for natural solutions to control their earwig infestations. One such solution is the use of spearmint. In this article, we will explore the effectiveness of spearmint as a natural repellent for earwigs.

What are Earwigs?

Earwigs belong to the Dermaptera order of insects and are characterized by their elongated bodies, antennae, and pincers. They typically range from 5-25mm in length and come in various colors ranging from brown to black. Earwigs are nocturnal insects that hide during the day in dark, moist areas such as under rocks, leaves or debris. They feed on a variety of things including plants, insects, and decaying organic matter. While they do not pose any direct harm to humans, they can cause significant damage to plants and crops.

Spearmint as a Natural Repellent

Spearmint is a herb with a fresh minty smell that is commonly used in cooking and for teas. It is also known for its ability to repel pests due to its strong scent. Spearmint contains compounds like limonene, carvone, and menthol that have insecticidal properties.

Spearmint can be used as a natural pest control method due to its effectiveness at repelling various pests including ants, mosquitoes, and spiders. The strong scent of spearmint masks the scent trails that pests use to navigate, effectively confusing them and preventing them from finding food or shelter.

Scientific Studies on Spearmint and Earwigs

Several scientific studies have been conducted on the effectiveness of spearmint oil in repelling earwigs. One study published in the Journal of Economic Entomology found that spearmint oil was effective at repelling earwigs in laboratory settings. The researchers tested the oil against other essential oils and found it to be one of the most effective at repelling earwigs.

Another study published in Pest Management Science found similar results when testing spearmint oil as a repellent for earwigs in field settings. However, the researchers noted some limitations in their study such as the need for higher concentrations of spearmint oil to achieve effective repellency.

Other Natural Methods for Earwig Control

There are several other natural methods for controlling earwig infestations. Cultural methods like cleaning up debris and reducing moisture can help eliminate potential hiding places for earwigs. Additionally, using other essential oils or plants like lavender or rosemary may also help repel earwigs.


In conclusion, spearmint has been proven to be an effective natural repellent for pests including earwigs. Scientific studies have shown that it can be effective both in laboratory and field settings, although higher concentrations may be needed for optimal results. While there are several other natural methods for controlling earwig infestations, using spearmint oil is an easy and affordable solution that is worth trying. By incorporating natural solutions like spearmint into your pest control routine, you can reduce your reliance on harsh chemicals while still effectively controlling pests in your home or garden.