Updated: January 27, 2023

Earwigs are a common garden pest that often cause damage to flowers and vegetables. These insects are known for their distinctive pincers located at the back of their bodies. While they may look intimidating, earwigs are generally harmless to humans. However, their presence can be quite unsettling, especially when they start to invade your home. In this article, we’ll explore whether lime is an effective repellent for earwigs.

Earwigs and their behavior

Earwigs are nocturnal insects that prefer to hide in dark, damp places during the day. They are attracted to moist environments and can often be found under mulch, rocks, or other debris in the garden. When earwigs invade a home, they typically seek out areas with high humidity such as bathrooms, laundry rooms, or basements.

Infestations can occur for several reasons including excess moisture, lack of ventilation, or the presence of decaying organic matter. Earwigs are not known to transmit diseases or cause significant damage to structures, but they can be a nuisance and cause damage to plants in the garden.

Lime as an insect repellent

Lime is a versatile substance that has many uses around the home and garden. It is commonly used in agriculture to adjust soil pH levels and add nutrients. Lime is also used as a natural insecticide to repel pests such as fleas, ticks, and mites.

Lime works by drying out the exoskeletons of insects, causing them to suffocate and die. It is an effective repellent because it creates an inhospitable environment for pests like earwigs that thrive in moist conditions.

Does Lime Repel Earwigs?

Research studies on lime as an earwig repellent have been inconclusive. Some studies have shown that lime can be effective in repelling other insects such as ants and fleas, but there is limited evidence to suggest that it is an effective repellent for earwigs.

Personal experiences with using lime to repel earwigs have varied. Some people have reported success in using lime to keep earwigs out of their homes and gardens while others have not seen any improvement.

Factors that affect the effectiveness of lime as a repellent include the amount applied and the frequency of application. Lime needs to be reapplied regularly as it breaks down quickly in moist environments.

Alternative methods for repelling earwigs

If you’re looking for alternative methods for repelling earwigs, there are several natural and chemical options available.

Natural repellents such as diatomaceous earth and cedar oil are effective in repelling earwigs without harming beneficial insects or plants. Diatomaceous earth works by dehydrating insects while cedar oil disrupts their sensory receptors.

Chemical insecticides can also be used to control earwig infestations. However, they should be used with caution as they can harm beneficial insects and plants.

Prevention techniques such as reducing moisture levels in and around your home, sealing entry points, and removing decaying organic matter can also help prevent future infestations.


In conclusion, while lime may not be the most effective earwig repellent, it still has many other benefits around the home and garden. Natural repellents like diatomaceous earth and cedar oil are excellent alternatives that don’t harm beneficial insects or plants.

Prevention techniques should also be implemented to avoid future infestations. If you’re struggling with an earwig infestation, it’s best to consult with a pest control professional who can provide tailored advice on how to manage the problem effectively.