Will Sevin Kill Japanese Beetles? YES! (easy guide)

If you are someone who’s disturbed because of Japanese beetles, you are alone having these tough times. A few years ago, I also suffered because of Japanese beetles, but luckily my problem was solved by Sevin.

Japanese beetles can be troublesome when you don’t know about them. Japanese beetles are a species of beetles that are known for their massacres. The larval stages of these Japanese beetles are called grubs.

Although Japanese beetles are harmless, the same is not true for the grubs. Grubs are like maggots. Grubs are white and have dark spots around their legs. What grubs do is hide under your lawn and will feed on the roots of your dead plants. The main problem arises when there is an infestation of grubs.

In this article, I will mention everything about Sevin and why it is your best product.

Will Sevin Kill Japanese Beetles

What is the Chemical Composition of Sevin?

Servin used to have the chemical composition of Carbaryl (C12H11NO2), which proved to be the best chemical compound for pests.

Unfortunately, the California Department of Pesticides and Regulation(DPR) has banned the use of Carbaryl in pesticides as they believe that the use of Carbaryl has been the cause of illness in the eyes, skin and respiratory system over a long period. 

Sevin is a trade name that has been used for years now to refer to synthetic insecticides. The insecticide used to have Carbaryl as an active ingredient. You may not find Carbaryl in Sevin, but many new chemicals have been used as active ingredients, which showed great results.

Sevin’s ready-to-use spray has zeta-cypermethrin as its active ingredient. Some other Sevin products have Zeta-cypermethrin, Bifenthrin, and Cyfluthrin as their active ingredients. 

Will Sevin kill Japanese Beetles?

Yes, Sevin will kill Japanese beetles. Sevin is a trading name that has produced one of the best pest control products for decades. Sevin gives you a 100% guarantee to exterminate every stage of Japanese beetles, along with more than 500 other insects. 

It is best to stay away from chemicals as they will harm your plants. You can try some easy homemade remedies which will work effectively as Sevin and you don’t need to spend a single dollar on it because you have the ingredients available in your house.

All you will need is dishwashing soap and water. Mix two tablespoons of dishwashing soap in a gallon of water and spray it on your lawn. You will see results within the next 24 hours. It works by costing grubs with a soapy mixture that stops the grubs’ breathing.

The major drawback of this is dishwashing soap can kill your plants so applying it to plants will not be your best solution. 

How do you use Sevin dust for Japanese beetles?

Although Sevin ensures you kill pests in contact, you need to know the correct way to apply them.

Japanese beetles can be hard to deal with as they have been fully developed into their final stage and are ready to leave the ground while the females are about to lay eggs. These are a few steps to apply Sevin for Japanese beetles. 

  1. Sevin comes in different ways. You will find Sevin in powder, liquid, or sprays. Whatever product you buy, read the instructions on the container. For powder, simply mix it in water according to instructions and apply it to the soil. 
  2. When spraying Sevin, don’t hesitate to spray on your plants. Sevin is safe to be applied to plants. Spray Sevin on the plant’s leaves, flowers, and roots. When the Sevin dries out, it will leave a white film washed away with rain. 
  3. Don’t leave after spraying once. You must spray at least once weekly to ensure Sevin is fully effective on your lawn. Applying during late summer will get rid of Japanese beetles since during this time, the Japanese beetles are ready to hatch and leave the ground. 

You might also want to spray after you have killed the Japanese beetles or if you have recently noticed grubs on your lawn. Applying Sevin after you have killed the Japanese beetles is essential. You need to make sure no eggs will hatch. You need to follow the steps below. 

  1. Before applying Sevin, ensure to hydrate your lawn to increase the effectiveness of Sevin. Watering your lawn will allow Sevin to work best as the ingredient will be able to penetrate the soil. 
  2. Apply Sevin according to the instructions mentioned in the packet. Make sure to keep the volume and concentration of the product checked. Excessive or poor use of Sevin will lower the effectiveness of the compound. 
  3. Water the plants after you have applied Sevin. Watering will allow the Sevin to reach into the soil and affect the roots of the plants on which grubs feed. 

Sevin Insect Killer for Japanese Beetles on my Grape Vines >> Check out the video below:

What are the best Sevin powders to kill Japanese Beetles?

Among all the products online, there are three products that work best according to their users. 

  1. Root 98 Warehouse Southern Ag Garden Insect Dust with Permethrin

About the item:

  • Ready-to-use insecticide.
  • Can be applied to plants and vegetables.
  • Contains 0.25% Permethrin.

About the item:

  • Can be used on vegetables, plants and poultry.
  • 0.25% Permethrin.
  • Control ants.

About the item:

  • Natural product.
  • OMRI listed.
  • Duster included.

People Also Ask (FAQs)

What are the other insects that Sevin kills?

Sevin is super effective when it comes to dealing with unwanted pests. Sevin ensures the complete removal of Japanese beetles and more than 500 other insects. Some include beetles, caterpillars, moths, maggots, ants, tomato hornworms, ticks, mole crickets, sod webworms, etc. 

What eats Japanese beetles?

Although Japanese beetles hide under the lawn, they are not safe from the mouths of their predators. The natural predators of Japanese beetles are birds, moles, possums, raccoons, skunks, and shrews. Knowing this will not solve your problem but increase them. These animals will eventually feed on your plants and vegetables and cause even more harm to you. 


Japanese beetles have become a growing problem in modern days. Chemical compounds have made it easier for us to control these pests.

But using chemicals is not necessary as you can treat your lawn differently. Home remedies are always recommended against insecticides.

Although Sevin is reliable, there remains a chance of harming your lawn. Sevin can be an expensive way to fix your lawn. On the other hand, homemade remedies are cost-efficient and reliable. 

Related articles:

Leave a Comment