When building a new deck or resurfacing an existing deck substructure the home owner or contractor should consider how insects may impact this new living space. Building a deck in a wet coastal and or warmer climate can pose more of a problem, but northern dry regions are not immune for this threat.
PVC decking or vinyl decking is arguably the best building material to combat insect penetration and eventual destruction of your new living space. Vinyl decking is well known for its mold and rot resistance, but in particularly coastal-wet and warm climates bugs can do more harm to your deck.
Termites, for example, tend to be of more concern in warm climates whereas carpenter ants tend to be more important in cooler climates. Wood-boring Powderpost Beetles damage structural wood mostly in damp/coastal climates. Powderpost Beetles can, however, damage hardwoods in any climate.
A list of the most common wood-boring insects (in no destructive order) are: Carpenter Ants, Termites, Lyctid Powderpost Beetles, Anobiid Powderpost Beetles, Round-headed Wood Borers, Flat-headed Wood Borers, Horntail Wasps and Carpenter Bees. From H. B. Moore (1979) USDA, FS, DHUD publication.
Most interesting: the bug or insect may be removed or poisoned out of sight, but the holes they have left behind will continue to damage your deck. Water, dirt and seeds infiltrate the holes causing deep rot or freeze/thaw cracks to widen.
Consider an attractive, bug resistant, PVC deck material when you weigh all the long term care and costs of building your new outdoor living space.