5 Early Signs of Termite Activity Around Doors & Trim
In South Florida, termite pressure never truly “turns off.” Warm temperatures and high humidity give both subterranean and drywood termites ideal conditions to spread quietly inside wood, trim, framing, and door casings. Because early activity usually happens behind finished surfaces, the first signs are subtle — but extremely valuable if you know what to look for.
1. Paint or caulk that looks rippled, bubbled, or uneven
When termites tunnel inside wood, the outer painted surface can begin to warp or separate from the material underneath, even if there’s no visible hole or damage yet. Many homeowners mistake this for humidity or poor paint work.
2. Tiny, pinpoint-size holes near door frames or trim
Drywood termites may create tiny exit holes when releasing frass (droppings). These holes can be so small that they blend into white paint, baseboards, or caulk lines.
3. Dry, sand-like pellets collecting below trim
This is frass — a major indicator of drywood termite activity. Pellets are uniform, gritty, and typically tan or light brown. They may appear on floors, window sills, or tops of baseboards.
4. Hollow or papery-sounding wood when tapped
Subterranean termites consume wood from the inside out, leaving only a thin outer shell. Lightly tapping the trim with a tool or knuckle may reveal an oddly hollow sound.
5. Swarm wings near doors, windows, or flooring
Discarded wings are often the first visible sign that termites are actively establishing a colony nearby. Wings are translucent, identical in size, and usually found in small piles.
Why doors and trim are common hotspots
Door casings and trim are typically attached using small gaps, nail holes, and caulk seams — perfect access points for both drywood and subterranean species. Moisture-prone entryways also increase conducive conditions.
When to call a professional
If you notice any one of these signs — even if it seems small — schedule an inspection. Termite colonies grow quietly and repairs can escalate from hundreds to tens of thousands without early intervention.