"I was amazed at the total devastation of the insect population around my home. I've not seen one live bug in or near my home since I sprayed the area; my wife said she saw one dead bug near the back door."
Japanese Beetle Control
Japanese beetles have become a huge problem in gardens and yards across the United States. These leaf-feeders can destroy entire plants and even the grubs can cause damage to your lawn. Because both stages of this beetle are damaging, and large numbers can cause large-scale destruction, it can be difficult to control Japanese beetle populations. Using a multi-step approach can help you learn how to kill Japanese beetle adults and grubs and keep them away from your lawn and garden.
Japanese Beetle Q & A
Here are a few common Q & A Japanese beetle facts to help you understand how to control these pests better.
Pictures of Japanese Beetles
Pictures of Japanese Beetle Leaf Damage
How to Get Rid of Japanese Beetles
Sprays, Granules & Powders
There are several treatments you can implement for killing Japanese beetles, lessening possible damage, and keeping them away. We recommend using a pyrethroid insecticide or repellant such as Talstar P or a natural insecticide like Essentria IC3 to control adult Japanese beetles. Spraying susceptible plants every 3-4 weeks while beetles are active with the highest allowable rate on the label is important. If your Japanese beetle population is very large, we recommend treating your lawn to kill the eggs and grubs and prevent adult infestations in the warmer months. Treating your lawn with Merit Granules early or milky spore powder later in the season will eliminate many of the grubs. Timing this type of treatment is key and you should contact your local cooperative extension to find out the best time to treat grubs in your area.
If your population isn’t very high, hand pick beetles off your plants and put them in a bucket of soapy water. Wrapping prized plants like roses in cheesecloth or fine mesh will protect them from large feeding populations. When landscaping a known Japanese beetle area, try to pick plants that Japanese beetles aren’t fond of, such as red and silver maple, boxwood, flowering dogwood, holly, white and green ash, magnolia, red mulberry, white poplar, common lilac, and most ornamental evergreen plants.
Japanese beetle traps can be effective tools for getting rid of these pests. It is recommended to kill these insects while they are still in the larvae stage (white grubs), but if they are already grown and infesting your property, using traps in conjunction with the sprays mentioned above can work really well.
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