What indicates an active infestation by wood-boring beetles?

Study for the South Carolina General and Structural Pest Control 7A Test. Prepare with flashcards and multiple choice questions, each with hints and explanations. Get ready for your exam!

An active infestation by wood-boring beetles is indicated by the presence of new emergence holes and live larvae. These emergence holes represent the exit points where mature beetles have left the wood after developing inside, and the presence of live larvae suggests that the infestation is ongoing, meaning that the beetles are still reproducing and feeding within the wood. Observing both of these indicators confirms that the wood is currently being utilized by the beetles, establishing it as an active infestation.

While frass, or wood dust, is a sign of wood-boring beetles as well, it can sometimes be left behind by previous infestations that are no longer active. The absence of wood fragments would not indicate an infestation, as it may suggest that the wood has been thoroughly consumed or might not provide clear evidence of current activity. Changes in wood color can occur for various reasons, including moisture levels or rot, and do not specifically indicate the presence of beetles. Therefore, the combination of new emergence holes and the presence of live larvae is the definitive sign of an active infestation.

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