Updated: February 22, 2023

Earwigs are a common garden pest that can cause significant damage to plants, fruits, and vegetables. These insects are known for their pincer-like appendages found at the end of their abdomen, which they use for defense and capturing prey. If you’re looking for a natural way to repel earwigs from your garden, you may have heard that eucalyptus can do the trick. In this article, we’ll explore if eucalyptus is an effective earwig repellent and how to use it in your garden.

What are Earwigs?

Earwigs are small insects that belong to the order Dermaptera. They have elongated bodies that can range in color from brown to black. Earwigs are known for their unique pincers found on their abdomen, which can be intimidating but are not harmful to humans. These insects feed on a variety of things, including dead or decaying plant material, insects, and even other earwigs. Earwigs are nocturnal and prefer dark and damp environments.

What is Eucalyptus?

Eucalyptus is a tree that is native to Australia but has been introduced to other parts of the world, including North America. The tree has distinctive blue-grey leaves and is known for its medicinal properties. Eucalyptus oil is derived from the leaves of the tree and has a strong, minty aroma. The oil is commonly used in aromatherapy, as well as in cleaning products and insect repellents.

Can Eucalyptus Repel Earwigs?

There have been several scientific studies conducted on the effectiveness of eucalyptus as an insect repellent, including its ability to repel earwigs. One study published in the Journal of Pest Science found that eucalyptus oil was effective in repelling earwigs from tomato plants. The researchers concluded that eucalyptus oil could be a potential alternative to chemical insecticides.

Eucalyptus oil contains compounds that are toxic to insects, including earwigs. These compounds disrupt the nervous system of the insect and can cause paralysis or death. When used as a repellent, eucalyptus oil creates an environment that is unpleasant for earwigs, causing them to seek out other areas to inhabit.

How to Use Eucalyptus to Repel Earwigs

There are several ways you can use eucalyptus to repel earwigs from your garden:

  • Eucalyptus oil spray: Mix 10-15 drops of eucalyptus oil with a quart of water in a spray bottle. Spray the solution around areas where earwigs may be hiding, such as under rocks or in cracks in the soil.
  • Eucalyptus branches around the garden: Place fresh eucalyptus branches around your garden to create an environment that is unpleasant for earwigs.
  • Eucalyptus essential oil drops in the earwig prone areas: Put a few drops of eucalyptus essential oil on cotton balls and place them in areas where earwigs are commonly found.


In conclusion, eucalyptus has been shown to be an effective earwig repellent. The strong scent of eucalyptus creates an environment that is unpleasant for these insects, causing them to seek out other areas to inhabit. While there are several ways you can use eucalyptus to repel earwigs from your garden, further research is needed to determine its long-term effectiveness. As with any natural remedy, it’s important to monitor its effectiveness regularly and adjust your approach as needed.