Alex from Kenosha, Wi writes
Does this kill Japanese cedar longhorned beetle, and is it safe to spray onto Japanese cedar fence pickets?
Bifen IT could kill Japanese cedar longhorned beetles if it were applied directly to the insects, or you can use Bifen IT to help protect trees from this insect by spraying the trunks of vulnerable trees. Bifen IT will not kill existing infestations since the larvae will create tunnels under the bark and/or cover them with frass. These (and many other) beetles are most likely to infest trees that are already weak from some other stress, so overall good care of the trees is the best prevention.
You can learn more about this insect in this Extension article.
Answer last updated on: 05/31/2021
