Two-lined chestnut borers attack all oaks that are stressed and declining. Look for the borer's D-shaped exit holes.The top of an infected tree may have dead and leafless branches, with wilted red-brown leaves in the middle of the crown and lower branches looking healthy and green. The DNR calls the characteristic pattern "dead, red and green."

Imidacloprid is applied as a liquid drench to the soil around the trunk of the tree (professional applicators can also apply it as a soil injection or a trunk injection).

Dinotefuron is applied as granules to the soil directly around the tree (professional applicators can also apply it as a bark spray, soil drench or soil injection).

Hire an arborist to treat your trees. These chemicals should be injected into the tree to kill the borers.

https://www.dnr.state.mn.us/treecare/forest_health/tlcb/index.html

https://extension.umn.edu/tree-and-shrub-insects/metallic-wood-boring-beetles

https://extension.umn.edu/planting-and-growing-guides/how-hire-tree-care-professional