Which feature distinguishes old house borer exit holes?

The distinguishing feature of old house borer exit holes is their regular size and oval shape. This is specific to wood-boring beetles like the old house borer, which creates exit holes that are not perfectly round but rather more elongated. These oval-shaped holes result from the way the larvae tunnel through the wood and subsequently exit.

Knowing this can help pest control professionals correctly identify old house borer activity, which is essential for implementing appropriate control measures. The exit holes left behind indicate past infestations, and understanding their unique characteristics aids in the diagnosis of the pest issue at hand.

Other factors, such as the size of the holes or the presence of powder, may relate to different types of wood borers, such as termites or carpenter bees, but they are not defining traits of old house borer exit holes.