What type of wood products do Anobiid beetles commonly infest?

Anobiid beetles, also known as deathwatch beetles, primarily infest products made from both hardwood and softwood. However, the most relevant context here is their preference for manufactured products and structural timbers. These pests are particularly notorious for targeting items like furniture, flooring, and structural beams that are made of wood.

The correct answer highlights that Anobiid beetles thrive in conditions where wood is processed and used in construction or furniture making, which can often lead to significant damage if left untreated. This is why the focus is on manufactured products and structural timbers; these items provide the ideal environment for the beetles to reproduce and cause harm.

The other choices refer to more specific categories of wood products that may not encapsulate the full range of items Anobiid beetles can infest. For instance, while they can infest outdoor landscaping wood, they are not limited to that environment or type of wood. Similarly, while they may occasionally impact plywood and particleboard, the more significant concern lies with the structural integrity of the products made from solid wood and their construction material counterparts. The emphasis on regulated materials in a structural context more accurately reflects the behaviors and preferences of Anobiid beetles, making the focus on manufactured products and structural tim