5 Signs of Termite Swarmers
Termite swarm season across Tennessee, Georgia, and Alabama typically runs from late March through April, triggered by warm days following spring rain once soil temperatures reach roughly 70 degrees Fahrenheit. During a swarm, a mature colony releases winged reproductives — called swarmers — whose purpose is to fly out and establish new colonies. Most homeowners do not witness the swarm itself, which often lasts only thirty to sixty minutes in the early afternoon. What they find instead is the evidence left behind. These five physical signs indicate that termite swarmers have been active near your home.
Sign 1: Shed wings on windowsills, near doors, or along the foundation
Shed wings are the sign most homeowners notice first. After swarmers emerge and find a mate, they shed their wings. The discarded wings are small, translucent, and roughly equal in size. They tend to accumulate in small piles on interior windowsills, near sliding glass doors, along garage floors, on patios, and near foundation cracks where swarmers entered the home.
Wing piles are delicate and easy to mistake for debris, but they are one of the clearest indicators that swarmers reached your home. If you find a cluster of small, uniform, translucent wings, a termite colony is close enough that its swarmers made it to or into your home.
Sign 2: Swarmers emerging from the ground or from interior cracks
Occasionally homeowners catch a swarm in progress. Winged termites emerge from the soil near the foundation, from cracks in a concrete slab, from mulched landscape beds, or from basement and crawlspace corners. Emergence typically occurs in the early afternoon on a warm, humid day following rain. The swarmers are larger than termite workers and have two pairs of wings that extend well past their bodies.
Emergence from an interior location — a basement corner, a slab crack, or a window frame — is a particularly meaningful signal. It suggests that the colony is located directly beneath or very near the structure.
Sign 3: Mud tubes on foundation walls or in the crawlspace
Subterranean termites build mud tubes — thin, pencil-width tunnels made of soil, saliva, and fecal material — to travel between the ground and the wood they are feeding on. These tubes run up foundation walls, along crawlspace sill plates, and sometimes along plumbing or support piers. An active mud tube is moist and can be crushed easily; an older tube may be dry and brittle.
Whether active or abandoned, a mud tube indicates that termites have traveled that route. Even an old, dry tube tells a professional that termites have connected soil to wood in that location, which informs where to inspect and what to recommend.
Sign 4: Doors or windows that stick, or cosmetic changes in painted wood
As termites tunnel through wood framing, the structural changes can cause doors and windows to fit more tightly than they used to. You may also notice paint that appears to bubble or buckle on wood surfaces, or darkened patches on wood siding or trim where moisture from termite activity has affected the finish.
These signs are subtle and easy to attribute to seasonal humidity or normal settling. On their own, they may not indicate termite activity. But when they appear alongside any of the other signs on this list — particularly near the foundation or in a basement — they are worth investigating.
Sign 5: Hollow-sounding wood or visible galleries
If you tap wood framing, trim, or structural members with the handle of a screwdriver and it sounds hollow or papery rather than solid, termites may have tunneled through the interior. In accessible areas like crawlspaces and attics, you may be able to see the galleries themselves — channels carved through the wood, often lined with mud.
Finding hollow wood or visible galleries indicates that termite activity has progressed to the point where wood is being consumed. This warrants a professional inspection to assess the extent of activity and determine the appropriate response.
Professional termite inspection from Specter
If you have noticed any of these five signs this spring — shed wings, emerging swarmers, mud tubes, changes in doors or windows, or hollow-sounding wood — Specter’s experienced technicians can conduct a thorough inspection of the foundation, crawlspace, and structural wood areas throughout your home. We will explain what we find, help you understand what it means for your property, and walk you through the treatment options that fit your situation. Give us a call whenever you are ready — we are always glad to help.
