Updated: April 11, 2023

Earwigs are commonly known garden pests that can also invade homes. These insects are nocturnal and thrive in humid environments. They are attracted to light and moisture, which make them a common problem in bathrooms, kitchens, and basements. In this article, we will explore the effectiveness of cedarwood as a natural repellent for earwigs.

What is Cedarwood?

Cedarwood is a type of wood that comes from trees in the cypress family. It has a distinctive aroma and is commonly used for furniture, flooring, and outdoor structures. Cedarwood contains natural oils that repel insects and other pests. These oils are also used in making commercial insecticides.

Types of Cedarwood Commonly Used for Pest Control

There are several types of cedarwood that are commonly used for pest control. The most popular ones include:

  • Eastern Red Cedar
  • Western Red Cedar
  • Northern White Cedar
  • Alaskan Yellow Cedar

How Cedarwood Works as a Repellent

Cedarwood contains chemicals called sesquiterpenes that repel insects. These chemicals interfere with the insect’s pheromone receptors, making it difficult for them to locate their food source and mate. Unlike chemical insecticides, cedarwood does not kill insects but rather creates an environment that they find undesirable.

Comparison between Cedarwood and Chemical Insecticides

Chemical insecticides are effective in killing insects but have several drawbacks. They contain harmful chemicals that can be toxic to humans and pets if ingested or inhaled. They also have a negative impact on the environment, killing beneficial insects such as bees and butterflies.

On the other hand, cedarwood is a natural product that is safe for humans and pets. It does not harm the environment and can be used as an alternative to chemical insecticides.

Earwig Behavior

Earwigs prefer moist environments such as gardens, mulch beds, and under rocks or logs. They feed on other insects and plants, making them both predators and scavengers. Earwigs can enter homes through cracks and crevices in walls, doors, and windows.

Explanation of How Earwigs Enter Homes and Gardens

Earwigs are attracted to light and moisture. They can enter homes through open windows or doors, gaps in weather stripping or screens, or through cracks in the foundation. In gardens, earwigs hide under rocks or logs during the day and come out at night to feed on plants.

Studies on Cedarwood as an Earwig Repellent

Several studies have been conducted on cedarwood’s effectiveness against earwigs. One study found that cedar oil was effective in repelling earwigs for up to two weeks. Another study found that cedar chips placed around plants reduced earwig damage by 80%.

However, these studies have limitations as they were conducted in controlled environments with limited sample sizes. More research is needed to determine the long-term effectiveness of cedarwood as an earwig repellent.

Tips for Using Cedarwood as an Earwig Repellent

Cedarwood can be used indoors or outdoors to repel earwigs. Here are some tips for using cedarwood as a natural pest control method:

  • Place cedar chips or blocks in areas where earwigs are likely to enter such as windowsills or doorways.
  • Spray a diluted solution of cedar oil on plants to repel earwigs.
  • Use cedar mulch in garden beds to create a barrier against earwigs.
  • Avoid using cedar products near water sources or where it may come into contact with food.
  • Keep pets and children away from cedar products as they may be sensitive to the oils.


In conclusion, cedarwood is a natural alternative to chemical insecticides that can effectively repel earwigs. It contains chemicals that interfere with insect pheromones, making it difficult for them to locate their food source and mate. While studies show promising results, more research is needed to determine its long-term effectiveness. If you’re looking for a natural way to control earwig infestations, give cedarwood products a try!