Amdro is a bait for the fat loving ants and Terro is a bait for the sugar loving ants. These baits are picked up by the worker ants and brought back to the colony and fed to the queen. When poison builds up in the queen, she dies. I have been told I have carpenter ants. Carpenter ants do not eat wood like termites, so they are not serious pests.
Carpenter ants hollow out areas in wood to use as rearing chambers for the young ants.
The workers search for sweets and other foods and may be mistaken for termites. Several features can be used to distinguish them. Carpenter ants have a very thin waist, termites are thick at the waist.