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Reliable Answers to Common Questions.

Where Do Japanese Beetles Sleep?

Japanese beetles nest and sleep in the ground. They burrow a few inches underground, or as deep as necessary to get adequate protection from the elements. When it rains, Japanese beetles will dig their way through the soil and find a temporary home underneath the soil in order to find […]

Filed Under: Japanese Beetle

Milky Spore Kills Japanese Beetle Grubs (Larva)

Japanese Beetle Grub by Travis S.

Most insecticides only kill adult Japanese beetles. In order to interrupt the life cycle of the Japanese beetle, it’s important to also kill the young grubs. Japanese beetle grubs live underground. The eggs were laid there by their mothers and the grubs develop a few inches beneath the surface for up […]

Filed Under: Japanese Beetle

How to Treat a Japanese Beetle Bite?

Japanese beetle on a rock. Photo by rhavener

Japanese beetles don’t bite too often because they don’t come in direct contact with humans or other animals very much. They are herbivores and seek out flowers and leaves to feed on. They stay away from animals who could be considered threats. And although it is rare, Japanese beetles can […]

Filed Under: Japanese Beetle

How to Make Japanese Beetle Repellent?

Peppermint oil by Chie Gondo

There are many oils that have pleasantly strong smells which insects such as the Japanese beetle are avoidant of. You can use these oils to easily make all-natural liquid repellents. These homemade repellents are not necessarily as powerful potent as commercial grade, but if you are determined to go the […]

Filed Under: Japanese Beetle

How Many Eggs Do Japanese Beetles Lay?

Japanese beetle on crêpe myrtle by Kent and Denise

The Japanese beetle produces only about 30 to 60 eggs in her entire lifetime. Keep in mind that an adult Japanese beetle dies after the short Japanese beetle season ends, so it is not a long lifetime we are talking about. The eggs are laid on a summer afternoon, and […]

Filed Under: Japanese Beetle

What Does Japanese Beetle Damage Look like?

Skeletonized leaves by Joe Rudd

Japanese beetles can do quite a bit of damage to the foliage of a tree in short time because they swarm and the damage is multiplied by their great numbers. They usually start eating at the top of the tree and then work their way down from there. The beetles […]

Filed Under: Japanese Beetle

Diatomaceous Earth for Japanese Beetles?

Diatomite (diatomaceous earth) by James St. John

Diatomaceous earth can be used to kill Japanese beetles and most other ground dwelling insects. It lodges in the beetles exoskeleton and dehydrates it to death. Diatomaceous earth kills Japanese beetles quickly, usually within 24 hours after contact. Obviously, it is impossible to apply the powder directly to the foliage […]

Filed Under: Japanese Beetle

Do Japanese Beetles Migrate?

The beetle and the damage done by J. Michael Raby

Japanese beetles don’t migrate, and they don’t hibernate either. They don’t move locations from season to season like birds do. Some people think that Japanese beetles migrate because they seem to disappear for most of the year. The beetles are seemingly everywhere during Japanese beetle season in the summer, and […]

Filed Under: Japanese Beetle

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