Which insect is often responsible for significant damage in wooden structures?

Carpenter ants are known for their capability to cause significant damage to wooden structures because they excavate wood to create their nests. Unlike termites that consume wood as food, carpenter ants remove wood to establish nesting sites, leading to weakened structural integrity over time. They often infiltrate areas with moisture or decaying wood, which makes homes and constructions particularly vulnerable to their presence. Their damage can often go unnoticed until it has become extensive, requiring substantial repairs.

Other insects mentioned, such as wood borers, do also contribute to wood damage but primarily target specific types of wood or certain conditions rather than being as prevalent or widely damaging as carpenter ants. Fleas and crickets, being pests that do not typically infest wooden structures, do not cause the same level of concern in regards to structural damage.