The answer to 'why is my carpenter ant swarms' is that carpenter ants are swarming to establish new colonies. Carpenter ants are a common household pest that nest in wood and can cause significant damage to homes. Swarming typically occurs in the spring or early summer when new colonies are formed.
Carpenter ant swarms are a sign of a larger infestation within your home. The swarmers are the reproductive ants that leave the nest to find a new location to start a new colony. This can indicate there is an existing nest nearby, often in damp or decaying wood. Addressing the root cause of the infestation is important to prevent further damage.