The answer to carpenter ant swarms is that they are a sign of a larger carpenter ant infestation in your home. Carpenter ants swarm in the spring, typically between March and June, to mate and establish new colonies. Swarms are a clear indication that there is an established nest nearby, often in the walls, floors, or roof of your home.
Carpenter ants can cause significant structural damage over time as they tunnel through wood to build their nests. The appearance of swarms means it's time to take action to identify and eliminate the nest before the problem gets worse. DIY solutions like baits and sprays may provide temporary relief, but for a full elimination of the colony, it's best to call in a professional pest control technician who can locate the nest and treat it effectively.