Sprague's Entomologist gives us a brief overview of these pests and their behavior

Carpenter Ants are known to cause significant damage to all kinds of structures. These mostly black bodied pests are found around damp, dead wood which are attractive areas for nest building. Instead of eating the wood like termites do, carpenter ants simply hollow out pathways inside wood. Certain parts of structures, e.g., around the underside of windows and decks, are most vulnerable to moisture and most attractive to the pest. 

In order to identify the ant, look for bodies ranging in length from 1/8th to 1/2 of an inch. While mostly black, the ant can also show shades of black and brown, or red and brown. The most obvious sign of the pest entering a structure is the presence of frass, which is a saw-dust like grouping of particles around the outside of structures. This is essentially the chewed-up part of the wood the ant did not ingest, but simply moved to create a pathway into your building.

Let Sprague help you identify these pests and rid them from your business.