Final answer:
Carpenter ants are usually targeted with perimeter barrier treatments because they can cause structural damage by hollowing out wood for their nests.
Step-by-step explanation:
The kind of ant that would typically warrant a perimeter barrier treatment is the Carpenter ant. Carpenter ants can cause structural damage to buildings by hollowing out wood for their nests. Unlike the red imported fire ants and Argentine ants that are aggressive and attack other ant species, directly impacting the ecosystem, Carpenter ants pose a threat due to the potential damage to the wooden structures of houses or buildings. Therefore, when considering a perimeter barrier treatment for pest control, Carpenter ants are the target as they could compromise the structural integrity of a property.