Tennessee Pest Identification Guide

How to Identify

• Carpenter ants are large — often black or black-and-red — with a single-node waist and evenly rounded thorax. Workers are noticeably bigger than any common house ant.
• Common ants (odorous house ants, pavement ants) are small, ⅛–¼ inch, and trail toward food. Odorous house ants smell like rotten coconut when crushed.
• Carpenter ants don't eat wood — they excavate it. Look for sawdust-like frass (wood shavings mixed with insect parts) near baseboards, window frames, or crawl spaces.

Where Found in TN Homes

Carpenter ants nest in moist, damaged wood — rotting window sills, leaky rooflines, deck posts, and crawl spaces. Common ants invade kitchens, pantries, and bathrooms following food and moisture trails.

How to Identify

• Brown recluse has a distinctive violin-shaped marking on the cephalothorax pointing toward the abdomen. Only 6 eyes (most spiders have 8). Uniformly tan or light brown — no bold markings on abdomen.
• Common house spiders typically have patterned abdomens — stripes, spots, or banded legs — and 8 eyes.
• If you can't see the violin marking clearly without magnification, assume it's a brown recluse in Bradley or McMinn County until proven otherwise.

Where Found in TN Homes

Brown recluses hide in undisturbed dark spaces — storage boxes, closet corners, under beds, inside shoes, behind wall outlets, and in basement clutter. East Tennessee sees brown recluse activity year-round. Peak encounters occur when disturbing stored items.

How to Identify

• Swarmers are dark-bodied with two pairs of equal-length wings that shed after flight. Wings longer than the body. Often confused with flying ants — ants have pinched waists; termite swarmers have straight, tube-shaped bodies.
• Workers are creamy white, soft-bodied, never seen above ground. You'll find them inside damaged wood or mud tubes.
• Mud tubes — pencil-width tunnels of soil on foundation walls or crawl space piers — are the clearest sign of subterranean termite activity in Tennessee.

Where Found in TN Homes

Swarmers emerge March–May near windowsills and light sources. Workers stay hidden in floor joists, wall studs, and crawl spaces near soil contact. Slab homes aren't immune — termites travel through expansion joints and plumbing penetrations.

How to Identify

• House mice are small (5–8 inches including tail), uniformly gray-brown, with large ears and a thin tail. Droppings are rice-grain sized (¼ inch). Can squeeze through a gap the diameter of a pencil.
• Norway rats are much larger (13–18 inches), stocky with a blunt nose, small ears, and shorter tail relative to body. Droppings are ¾ inch capsule-shaped. Burrow near foundations, woodpiles, or under slabs.
• Both gnaw — rats leave larger gnaw marks (¼ inch+) on wooden beams, wiring, and food packaging.

Where Found in TN Homes

Mice enter through gaps around pipes, utility lines, and foundation cracks — especially in fall as temperatures drop. They nest in insulation, wall voids, and cabinet spaces. Norway rats prefer ground-level burrows and lower floors, especially near creeks, fields, or commercial food sources common around Cleveland and Athens, TN.

How to Identify

• Bold black-and-white striped pattern on legs and body — distinctive "tiger" markings. Single white stripe running down the top of the thorax.
• Smaller and more aggressive than common mosquitoes. Day-biting — active sunrise to sunset (unlike most mosquitoes that peak at dusk).
• Breed in very small amounts of standing water: bottle caps, plant saucers, clogged gutters, tarps. Can complete a breeding cycle in as little as 7 days.

Where Found in TN Homes

Asian tiger mosquitoes are the dominant mosquito species in Bradley and McMinn County. They stay close to their breeding source — usually within 300 feet. Shaded, humid yards with any standing water are prime habitat. Active April–October in East Tennessee's climate.

How to Identify

• American cockroaches are large (1–1½ inch), reddish-brown, with a yellowish figure-8 pattern on the back of the head. Fly occasionally. Often called "palmetto bugs" in the South.
• German cockroaches are smaller (½–⅝ inch), tan to light brown, with two parallel dark stripes running behind the head. Don't fly but are faster and more prolific — a single female can produce 30,000 offspring per year.
• If you see cockroaches during the day, the infestation is already large. They are nocturnal by nature.

Where Found in TN Homes

American cockroaches enter from outside through sewer connections, drains, and foundation gaps — preferring moist utility rooms and crawl spaces. German cockroaches infest kitchens and bathrooms, hiding behind refrigerators, under sinks, and inside cabinets. German cockroaches require professional treatment — OTC sprays often scatter rather than eliminate infestations.

How to Identify

• Yellow jackets are stocky with bright yellow-and-black banded abdomens, short waist, no visible hair. Nest underground or in wall voids — enclosed paper-like nests can contain thousands of workers. Extremely aggressive when disturbed.
• Paper wasps are slender with longer legs that dangle during flight — brown with yellow markings and a longer waist. Build open umbrella-shaped nests under eaves, window frames, and porch ceilings. Less aggressive unless nest is touched directly.
• Both sting multiple times. Yellow jacket stings in late summer are common during lawn mowing near ground nests.

Where Found in TN Homes

Yellow jackets nest underground near landscaping, in wall voids, and occasionally in attics. Paper wasps colonize eaves, shutters, window frames, and outdoor furniture. Both are active spring through fall in East Tennessee, with colonies peaking in August–September.

How to Identify

• Deer ticks (black-legged ticks) are tiny — sesame-seed sized. Orange-brown body with dark legs. Nymph stage is poppy-seed sized and responsible for most Lyme disease transmission. Primary Lyme disease vector in the eastern U.S.
• Lone star ticks are larger, reddish-brown, with a single white spot on the back of females — the defining feature. More aggressive host-seekers. Known vectors for ehrlichiosis, STARI, and alpha-gal syndrome (red meat allergy).
• Both are active in Tennessee from early spring through late fall. Deer ticks remain active in mild winters above 35°F.

Where Found in TN Homes

Ticks inhabit tall grass, wooded edges, leaf litter, and shrub borders. They don't jump — they quest (wait with legs extended) on vegetation for passing hosts. Yard edges bordering woods or fields are highest risk. Bradley and McMinn County have significant tick pressure due to abundant deer populations and mixed terrain.