Updated: June 10, 2023

Earwigs are one of the most common and annoying pests that invade our homes and gardens. These insects are attracted to moist environments, and they can cause significant damage to plants and crops. If left untreated, earwig infestations can quickly become overwhelming. Fortunately, there is a simple and effective solution to this problem: killing earwigs with soy sauce and veg oil.

What are Earwigs?

Earwigs are small, elongated insects with a pair of pincers-like appendages at the end of their abdomen. They are usually brown or black in color and range in size from ½ to 1 inch long. Earwigs are attracted to moist environments, such as under rocks, in mulch or compost piles, and in damp soil.

Why Should You Get Rid of Earwigs?

Earwigs feed on a variety of plants and can cause significant damage to crops and gardens. They also have a tendency to invade homes, especially during hot and dry weather conditions. Earwigs can crawl into small cracks and crevices, making it difficult to get rid of them once they have established a foothold inside your home.

How Does the Soy Sauce and Veg Oil Method Work?

This method works by attracting earwigs with the scent of soy sauce mixed with vegetable oil. Once the earwigs come into contact with the mixture, they will drown in the liquid. The soy sauce also contains high levels of salt, which dehydrates the earwig’s body, causing it to die.

How to Prepare the Soy Sauce and Veg Oil Mixture

To prepare this mixture, you will need:

  • 1 cup soy sauce
  • 1 cup vegetable oil
  • A large bowl

  • Mix the soy sauce and vegetable oil together in a large bowl.

  • Place the bowl in the area where you have seen earwigs.
  • Check the bowl daily and dispose of any dead earwigs.

Tips for Using the Soy Sauce and Veg Oil Method

  • Place the bowl in an area that is easily accessible to the earwigs.
  • You may need to use multiple bowls if you have a large infestation.
  • Change the mixture every few days to ensure its effectiveness.
  • Be sure to dispose of dead earwigs properly to prevent attracting other pests.

Other Methods for Killing Earwigs

While the soy sauce and veg oil method is effective, there are other methods you can try to get rid of earwigs:

  • Diatomaceous earth: This is a natural substance that consists of crushed fossils of aquatic organisms. When sprinkled around the perimeter of your home or garden, it can dehydrate and kill earwigs.
  • Sticky traps: These traps are coated with a sticky substance that traps earwigs when they crawl over it. They can be placed in areas where you have seen earwigs, such as near doors or windows.
  • Insecticides: There are many insecticides on the market that are specifically designed to kill earwigs. It’s important to read the label carefully and follow all instructions when using insecticides.


Earwigs can be a frustrating pest to deal with, but with the soy sauce and veg oil method, you can effectively get rid of them without harming your plants or crops. Remember to keep your home and garden dry and remove any debris where earwigs may hide. If you have a severe infestation, consider contacting a professional pest control service for assistance.


Can I use any type of soy sauce?

Yes, any type of soy sauce will work for this method.

Will this method harm my plants?

No, this method is safe for plants.

How long does it take for this method to work?

It may take a few days for the earwigs to come into contact with the mixture, but once they do, they will drown quickly.

Can I reuse the mixture?

No, it’s important to change the mixture every few days to ensure its effectiveness.

Will this method work on other pests?

This method is specifically designed for earwigs and may not be effective for other pests.