Will Dawn Dish Soap Kill Japanese Beetles

It's been documented that Japanese beetles can devastate everything from forests to gardens to lawns and everything in between. They get their nutrition from the plant life around them and lay their eggs in the soil. Anyone who has dealt with these annoying pests before is aware of how difficult it can be to get rid of them. Dish soap containing Dawn will be effective in killing Japanese beetles. Put four tablespoons of dish soap into a spray bottle, then fill the rest of the bottle with water. After shaking the solution, spray it on the beetles and larvae to kill them. There are many effective preventatives, such as chickens, neem oil, and organic pesticides. You'll also learn the following information about using Dawn dish soap to get rid of Japanese beetles as you read through the rest of this article:


  • Two easy methods to take on Japanese beetles with dish soap

  • Multiple alternative treatments that won’t harm your plants

  • Whether or not Japanese beetles are good for the soil

Pro Tip: In just a few short weeks, Japanese beetles can completely devastate even the most carefully tended garden. If you find one in your yard, it is in your best interest to get rid of them as soon as possible. Think about looking through the various options for neem oil for plants that are available on Amazon. Your garden may benefit immensely from even the smallest adjustment you make to it.

How Can You Get Rid of Japanese Beetles?

A straightforward homemade solution made of Dawn dish soap can be used to effectively control and reduce the number of Japanese beetles in your garden or lawn. This can be accomplished by using the solution. The preparation of this remedy entails the steps listed below:


Method 1

  1. (Mix four tablespoons of Dawn dish soap with water inside a spray bottle.

  2. Shake the mixture well.

  3. Spray directly onto Japanese beetles and larvae.

Method 2

  1. Mix 1 teaspoon of Dawn dish soap with 1 cup of vegetable oil and shake well.

  2. Add 1 quart of water to the mixture and shake well.

  3. Add 1 cup of rubbing alcohol.

  4. Shake the mixture vigorously to allow the vegetable oil to emulsify.

  5. Pour the mixture into a spray bottle.

  6. Spray on your crops and on your lawn at 10-day intervals to control the beetles.

The elimination of Japanese beetles using the aforementioned methods is successful due to the fact that Dawn Dish Soap can remove the protective wax that covers bugs, causing excessive water loss from the insect bodies. Because of this, the beetles' cell membranes become disrupted, which ultimately leads to their demise.

Alternative Solutions to Remove Japanese Beetles

apanese Beetles can be removed in the following ways:

Taking Care of Your Plants When You Have Japanese Beetles

Consider harvesting your crops and fruits at the right time before they become overripe. Japanese beetles are drawn to decaying and overripe fruits. Get rid of decayed and rotten fruits, vegetables, trees, and dying plants before attracting the beetles. 

Try Using Row Covers to Protect the Plants


According to Almanac, row covers prevent Japanese beetles from entering the crop while still allowing water, sunlight, and air to reach the plants. It is imperative that the cover's edges be flush with the ground and completely sealed.

If, on the other hand, you already have beetles or beetle larvae in your soil, you will only be able to catch them by using your plants as bait if you choose to use this method. In addition, you should only use this method if you do not require your plants to be pollinated, as using row covers will prevent pollinators from reaching your plants.


Select Plants That Don’t Attract Japanese Beetles


The individual plants that roses, apples, raspberries, apricots, hibiscus, soybeans, cherries, peaches, birch, American linden, Norway maple, Japanese maple, grapevines, plums, pin oaks, and crape myrtle are most likely to attract Japanese beetles are the ones that are most susceptible to infestation.

Choose your crops carefully and reduce the number of their preferred plants to lessen the likelihood that their population will become established in your garden and cause extensive damage.

Alternately, if your choice of plants includes their preferred crop, you might want to consider spacing those plants very far apart from each other and from the rest of the garden in order to reduce the number of beetles that are present.

You can also plant crops that the beetles don't like in between the crops that they prefer to eat. This will help prevent damage from the beetles. Rue, garlic, and tansy are all examples of such crops.


Chickens Eat Japanese Beetles


On your farm, it is helpful to keep barnyard birds like chicken and guinea fowl so that you can cut down on the number of insects. They also consume other pests such as ticks in addition to the larvae of Japanese beetles and other species of beetles. The larvae can be brought to the surface of your lawn by spraying it with a solution composed of one gallon of water, two tablespoons of Dawn dish soap, and one gallon of water. After that, the birds will have an easier time devouring them.


Remove Beetles and Grubs by Hand


Even though it's a laborious and time-consuming process, handpicking Japanese beetles from your plants and then disposing of them is still the most effective method of pest control for these insects. The morning is the best time to collect Japanese beetles because they are most active during this time of day.

Put on gloves designed for protection, pick the beetles up with care so as not to crush them, and then submerge them in a bucket containing a solution consisting of two tablespoons of Dawn dish soap and one gallon of water. The beetles will die as a result of this.


Cover Your Plants with a Large Drop Cloth at Night


At night, use a large drop cloth to cover your plants. In the morning, remove the drop cloth and dispose of the attached beetles in a bucket with a solution of Dawn dish soap and water (2 tablespoons of Dawn dish soap and 1 gallon of water).


Trap the Beetles with a Can Filled with Fruit Cocktail


Cedarcide recommends putting a fruit cocktail into a can and allowing it to ferment in the sun for a couple of days. After the mixture has had time to ferment, move it to a location that is a significant distance from the plants you are attempting to preserve and set the can containing the cocktail atop a few bricks within a pail that is filled with water. The beetles will be drawn to the fruit cocktail, but because it is surrounded by water, they will be unable to get to it. The beetles are killed by submerging them in the bucket of water.

Use Neem Oil to Remove Japanese Beetles


Neem oil is effective in controlling Japanese beetles, especially on roses. Adult beetles ingest the neem oil, which has a chemical that is passed down to their eggs. When the eggs develop into larvae, they die long before they mature into adults, effectively reducing the beetle population.

Consider Safe Insecticides

You can spray your plants or dust them with approved insecticides from your local store, conveniently reducing the population of Japanese beetles and therefore saving your plants.

What are Japanese Beetles Good For?

The larval stage of Japanese beetles is beneficial to the environment because they aerate the soil and provide a tasty treat for barnyard chickens and other birds. Japanese beetles also play an important role in pollination. However, they are not beneficial to the environment in any way, as they are responsible for the extinction of a number of plant species.

When they are in the larval stage, they feed on the roots of plants and also cause damage to grass in lawns. As adults, they feed on the leaves and shoots of plants, preventing the plants from producing enough food for themselves.

Before the year 1900, Japanese beetles were supposedly only found in the northern islands of Japan. This information comes from Oxford Academic. At the beginning of the 20th century, the regulations that were in place at the time prohibited the importation of plants that were rooted in soil; however, the enforcement of these regulations was ineffective and inadequate.

It is believed that the Japanese beetle was inadvertently brought into the United States in the soil of irises that were imported from other countries. After that, it was found in a nursery in the state of New Jersey, and from there, due to the favorable turfgrass cover, it began to spread throughout the country.


Wrapping It Up


Dish soap is a common household item that can be used to get rid of Japanese beetles. Although they are a bothersome pest, dish soap can get rid of them. Your garden can be saved from the destruction caused by insects by using a mixture of a few tablespoons of soap and a couple of cups of water.

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