What Do Termite Droppings Look Like? (And What to Do Next)

Estimated reading time: 10 to 12 minutes

Termite droppings look like tiny, hard, six-sided pellets the size of coarse coffee grounds or poppy seeds. They range from pale tan to dark brown, depending on the wood termites consumed, and they usually pile up in small mounds beneath a tiny "kick-out" hole in baseboards, window sills, wooden furniture, or other wooden structures. This digested wood waste is called termite frass, and finding it is the single most common way homeowners confirm a drywood termite infestation.

If you found a small pile of what looks like gritty sand or pepper near a wood surface, this guide walks you through what to inspect, how to tell frass from sawdust or mouse droppings, where else to look, and what to do next. I'll also map specific DIY treatment products to the species you're dealing with, because the wrong product on the wrong termite is ineffective for achieving lasting termite control.

The penny shows how tiny each pellet is. Drywood termite pellets average 1/32 inch long, which is why most homeowners mistake the first pile for sawdust or sand.

What is Termite Frass?

Termite frass is the fecal pellets termites push out of their galleries as they consume wood. Drywood termites produce dry, hard pellets that they actively eject through small "kick-out" holes. Subterranean termites use their feces to build mud tubes instead, so you almost never see loose pellets from them.

Three quick facts about frass:

• Color: ranges from pale beige to dark brown, matching the wood being eaten.

• Shape: elongated, six-sided pellets with rounded ends, all roughly identical in size.

• Size: about 1 mm long, similar to coarse coffee grounds, poppy seeds, or dark grains of sand.

Frass is generally harmless to humans on contact, but the dust can cause respiratory irritation if you stir it up. Avoid direct contact, do not vacuum it without a HEPA filter, and do not dispose of it before you photograph the pile. A pest control professional will want to see the pattern of the visible droppings during a termite inspection. For the broader playbook on identification, treatment, and prevention, see our pillar guide on how to get rid of termites.

Drywood Termite Droppings: What They Look Like

Drywood termite droppings are the textbook image of frass: clean, hard, hexagonal pellets that pile up directly below a tiny pinhole in wood. If you see a small pile of what looks like dark sand or sawdust below a baseboard, window frame, or wooden beam, drywood termites are the prime suspect.

Drywood Termites

Drywood termites live entirely inside the wood they eat. They don't need soil contact and don't build mud tubes. Colonies are smaller than subterranean colonies (a few hundred to a few thousand workers), but a mature colony can quietly hollow out beams, attic rafters, hardwood floors, and wooden furniture over several years.

According to the University of Kentucky entomology department, drywood termites are common in Kentucky and other southern coastal states, and infested furniture is a major way they spread inland. Read the full extension write-up here.

Drywood Termite Droppings

Drywood termite droppings are the diagnostic sign of an active drywood termite infestation, because termites leave droppings as they keep their galleries clean by pushing pellets through small "kick-out" holes about the diameter of a BB. You might notice small piles where these kicked-out pellets have collected. Look for:

• Six-sided pellets with concave sides and rounded ends.

• Uniform size across the entire pile (frass is sieved through the kick-out hole).

• Color matched to the wood the termites are eating, from light cream to chocolate brown.

• Repeat piles in the same spot if you sweep them away. Fresh frass within a week means an active termite infestation.

Frass is typically found in cone-shaped mounds beneath infested wood.

A close-up view makes the hexagonal geometry more noticeable. Drywood termite droppings are dry and oval-shaped. This shape is created as workers expel waste from their narrow abdomen.

Subterranean Termite Signs: Mud Tubes Instead of Visible Droppings

Subterranean termites do not leave visible droppings. They mix their feces with soil and saliva to build pencil-thick mud tubes that protect them while they travel between the ground and the wood they're eating. If you have subterranean termites, you'll find mud tubes long before you find frass.

Mud Tubes

Mud tubes look like dried-mud highways climbing foundations, basement walls, pier blocks, or the inside of crawl spaces. They are usually 1/4 to 1 inch wide, light to dark brown, and feel gritty. The U.S. EPA notes that subterranean termites cause the majority of termite damage in the United States, and mud tubes are the single most reliable sign of their activity. See the agency's overview at the EPA termite identification and control page.

If you suspect subterranean activity, our guide to termite swarmers explains the other signal you'll see: winged reproductives swarming in spring.

Termite Droppings vs Sawdust, Mouse Droppings, and Carpenter Ant Frass

The first time most homeowners notice termite frass, they assume it's sawdust, sand, or rodent droppings. Here's how to tell them apart at a glance.

Unlike sawdust, termite frass pellets are uniform and granular, and termite poop is one sign of an active infestation rather than leftover wood dust. Termite droppings can range from light beige to dark brown, which helps with identification.

Unlike mouse droppings, frass crumbles to powder under your fingernail and never smells of urine. If you're seeing fibrous shavings instead of hard pellets, you may be dealing with carpenter ants or powderpost beetles. For winged insects, the flying ant vs termite comparison clears up the most common mistake.

Side-by-side comparison is the fastest way to ID what's on your windowsill. Note that only termite frass is uniformly six-sided and granular.

Where to Find Termite Frass and Termite Droppings

Termites kick out frass wherever they have active galleries near the wood surface. Inspect these hotspots first.

Find Termite Frass

Carry a flashlight and a screwdriver to these hotspots and look for fresh frass:

• Attic rafters and exposed beams, especially in older homes in coastal states.

• Window sills and door frames, where drywood swarmers commonly enter.

• Wooden furniture, particularly antiques or pieces stored in garages and sheds.

• Hardwood flooring seams, where pellets collect along cracks.

• Hollow-sounding wood when you tap it with a screwdriver handle.

Find Termite Droppings

To spot termite droppings outside the home, walk the perimeter and check:

• Decks and porch posts, where ground contact meets dry wood.

• Fence posts and wooden retaining walls.

• Crawl spaces, where you may see both subterranean mud tubes and drywood frass on overhead joists.

• Wood piles stacked against the house (a major risk for both species).

These five zones cover roughly 90% of where homeowners actually find frass or mud tubes during a self-inspection.

Other Signs of Termites Beyond Droppings

Frass and mud tubes are the loudest signals, but they aren't the only ones. Look for these other signs during any inspection.

Signs of Termites

Common signs of termites in a structure are early signs homeowners may notice:

1. Discarded wings on window sills, door tracks, or floors after a swarm.

2. Hollow-sounding wood when tapped with a screwdriver.

3. Blistered or rippled paint that looks like water damage.

4. Pencil-thick mud tubes on foundations, piers, or basement walls.

5. Tight-fitting doors and windows that suddenly stick (from moisture released by termite activity).

If you notice signs like frass, mud tubes, or wings, you may be catching the infestation early.

Signs of a Termite Swarm

The clearest early sign of a termite swarm is a pile of identical translucent wings near a light source or window, with no insect bodies attached. Subterranean swarmers emerge after warm spring rains. Drywood swarmers fly in late summer and early fall.

Other Signs to Monitor

Other signs include faint clicking sounds inside walls (soldiers banging their heads as an alarm signal), small holes in drywall where workers broke through, and damaged wood that crumbles when probed. For a deeper visual reference on the insects themselves, see our termite identification guide.

What to Do if You Find Termite Droppings

Take these five steps in order. Do not skip the inspection step in favor of buying products first.

1. Photograph the pile with a coin for scale, then bag a sample for ID.

2. Tap surrounding wood with a screwdriver to locate hollow areas.

3. Inspect within a 10-foot radius for kick-out holes, mud tubes, and discarded wings.

4. Reduce moisture sources nearby: leaking pipes, clogged gutters, wet crawl spaces.

5. Choose a treatment matched to the species (see the product section below).

Pest Control

A pest control company with an experienced team is the fastest way to confirm species and scope and develop a treatment plan. Professional help is especially important when droppings point to a larger termite problem.

If you prefer to handle treatment yourself, our termite control products catalog carries the same professional-grade chemistry that licensed termite control companies use, with detailed instructions for homeowner application.

Whatever route you choose for your pest control needs, treat promptly. Left untreated, a termite colony can cause major damage to your home's structure within a single year, especially when subterranean species are involved.

Purdue University's extension entomologists outline subterranean colony biology and treatment options in detail in the Purdue subterranean termites publication. If you vacuum frass during cleanup, dispose of the contents in a sealed plastic bag. Then wipe the area with a damp cloth.

DIY Treatment Products by Species

Match the product to the termite. The wrong chemistry on the wrong species is ineffective.

For a head-to-head ranking of these products with detailed pros and cons, see our breakdown of the best termite killers.

Preventing Future Termite Infestations

The cheapest termite treatment is the one you never need. Reduce moisture, eliminate wood-to-soil contact, and inspect on a schedule.

Core prevention checklist:

• Keep mulch and firewood at least 12 inches from the foundation.

• Fix leaks and grade the soil to drain water away from the house.

• Seal cracks in the foundation and around utility penetrations.

• Replace any wood touching soil with pressure-treated or concrete alternatives.

• Ventilate crawl spaces and run a dehumidifier in damp basements.

Regular Inspections

Annual inspections help identify an active termite infestation and other issues before they worsen, when treatment is cheapest and structural damage is minimal. Walk the perimeter twice a year and probe accessible wood with a screwdriver. Schedule a professional termite inspection every one to three years, more often in high-risk southern states.

When termites consume wood, frass may be one of the first clues inspectors find. Identifying termite species during inspection also helps determine the right response. Bookmark our termite FAQ for fast answers between inspections.

Subterranean mud tubes are usually the first visible sign of an underground colony. They can extend dozens of feet from the soil to reach wood above grade.

The Bottom Line on Termite Droppings

Termite droppings are small, hard, six-sided pellets the color of coffee grounds, piled below tiny kick-out holes in wood. If you find them, you almost certainly have drywood termites.

If you find mud tubes instead, subterranean termites are eating your home from below. Either way, act now: photograph the evidence, identify the species, reduce moisture, and match a professional-grade product like Taurus SC, Bora-Care, or Trelona ATBS to the species you're dealing with.

A one-hour inspection and a targeted treatment today protect you from tens of thousands of dollars in structural repair later. Ready to take action? Browse our full termite control catalog or start with the pillar termite guide for a complete treatment walkthrough.

Frequently Asked Questions

Q. Are termite droppings harmful to humans?

A. Termite droppings are generally harmless on direct contact. However, the dry pellets can break down into a fine dust that may cause respiratory irritation or allergic reactions in sensitive individuals. Avoid handling frass without gloves, do not vacuum it with a standard filter, and never sweep large piles without a mask.

Q. Do termites always leave droppings?

A. No. Only drywood and dampwood termites leave visible piles of fecal pellets, also called termite feces. Drywood termites leave these pellets because their living space stays inside the wood, so they push waste out to keep galleries clear. Subterranean termites, which cause most U.S. termite damage, use their feces to build mud tubes instead. If you suspect termites but see no pellets, inspect foundations and crawl spaces for pencil-thick mud tubes climbing the wood.

Q. What does fresh termite frass look like compared to old frass?

A. Fresh termite frass is sharp-edged, uniformly colored, and holds its pellet shape under light pressure. Old frass dulls, fades toward gray, and crumbles more easily. If you sweep a pile away and new pellets appear within a week, the colony is actively feeding, and you should treat immediately.

Q. Can I treat termite droppings myself, or do I need a professional?

A. You can treat localized drywood infestations with Bora-Care or Termidor Foam if you can access the galleries. Subterranean infestations require a full perimeter treatment with Taurus SC, Termidor SC, or Trelona ATBS bait stations. Whole-home or hidden infestations warrant a professional termite inspection to confirm scope before you spend money.

Q. How fast do termites cause major damage?

A. Subterranean termite colonies can damage structural wood within six to twelve months of establishing themselves inside a home. Drywood termites work more slowly, with serious damage typically taking three to eight years. Either way, early detection through annual inspections is far cheaper than repairing damaged wood and replacing compromised beams.