Finding small, sand-like pellets around your home can be scary. If you spot tiny pellets that look like coarse sand, you may be looking at termite pellets. These are a clear sign of drywood termite activity. Also called frass, they are one of the best ways to know that drywood termites are eating the wood in your home.
Years ago during my training, I went with a team to a home in Alexandria. The homeowner had noticed a small bulge in their window sill. When we looked closer, we found termite pellets piling up under tiny holes along the sill and in the crawl space. That was my first up-close look at drywood termite frass. It showed me how small clues can point to big problems hiding inside walls.
Whether you just noticed these pellets or have been seeing them for a while, the next step is always the same: figure out exactly what you’re looking at and whether termites are still active.
What Are Drywood Termite Pellets?
Drywood termite pellets are the waste that drywood termites make as they eat wood. Unlike subterranean termites that live in the soil, drywood termites live their whole lives inside dry wood. Their bodies pull almost every drop of water from their waste. This creates hard, dry pellets with a shape you won’t find with any other pest.
The University of Florida IFAS Extension explains that drywood termites have three pairs of glands that squeeze water from their waste. This process creates barrel-shaped pellets that are a sure sign of drywood termite activity.
These pellets are not random debris. They come from active feeding. When you find fresh termite pellets, it means termites are eating the wood right above where the pellets have piled up.
How to Identify Termite Pellets: Size, Shape, and Look
Termite pellets have a very specific look that makes them easy to spot once you know what to check for. Each pellet is about 1 millimeter long, roughly the size of a grain of coarse sand.
The most telling feature is the shape. Termite pellets are small capsules with six flat sides, forming a hexagonal shape when you cut across them. The ends are rounded, giving them a barrel-like look. This six-sided shape sets them apart from all other pest droppings.
During inspections, I always show homeowners the ridges on each pellet. These ridges run along the length and you can see them without a magnifying glass. This unique shape tells me right away that we’re dealing with drywood termites, not another wood-eating pest.
Texture and Feel
Fresh termite pellets are hard and dry. They don’t crumble like sawdust or powder. If you roll them between your fingers, they keep their shape and feel solid. This hardness comes from how the termite’s body removes water during digestion.
The pellets often pile up in small mounds that look a lot like someone sprinkled coarse sand in your home. Many homeowners first think the termite pellets are just sand tracked in from outside.
Color Variations in Termite Pellets
The color of termite pellets depends on what type of wood the termites are eating. Colors range from cream and light tan to dark brown and nearly black. The pellets take on the shade of the wood being consumed.
During that Alexandria inspection, we found pellets ranging from cream to dark brown in the same pile. This “salt and pepper” look is common. Termites often eat through different growth rings in the same piece of wood, and each ring has a different shade.
One thing to know: color does not tell you the age of the pellets or how long the infestation has been going on. Many people think darker pellets are older, but that is not true. The Clemson Cooperative Extension confirms that color comes from the wood, not from how old the pellets are.
Why Drywood Termites Create Kick-Out Holes
Drywood termites don’t scatter pellets all over their tunnels. They push the pellets out through tiny openings called kick-out holes. These holes are about 1-2 millimeters wide, just big enough for the pellets to fit through.
The termites make these holes from time to time to clean out their living space. After pushing out the pellets, they often seal the hole back up with a thin plug or have a soldier termite block it with its head. This keeps the inside of the tunnel nice and controlled.
Where the pellets land tells a story. Holes that are higher up create wider scatter patterns as pellets fall and bounce. Lower holes usually create neat, cone-shaped piles right below the opening. This helps me figure out exactly where termites are active inside a wall or beam.
How to Tell Termite Pellets from Other Pest Droppings
Many homeowners mix up termite pellets with waste from other wood-eating pests. Each pest creates very different debris. Knowing the differences helps you figure out what you’re dealing with.
Carpenter ant debris is made up of uneven wood chips and sawdust-like bits. Unlike the uniform six-sided shape of termite pellets, carpenter ant waste varies in size and shape. You will also often find insect body parts mixed in with carpenter ant sawdust. That never happens with termite pellets.
Powder post beetles make a flour-like powder that is much finer than termite pellets. This powder usually stays packed inside the beetle tunnels rather than being pushed out in separate pellets. The feel is completely different from the hard, individual pellets that drywood termites produce.
Dampwood termites also create pellets, but theirs are football-shaped. They lack the six lengthwise ridges found on drywood termite pellets. According to the UC pest management guide, this shape difference is one of the best ways to tell the two termite types apart.
Where to Look for Termite Pellet Piles
Where you find termite pellets points you right to the active termite tunnels. Pellets usually pile up beneath wood structures like ceiling joists, window sills, door frames, and furniture joints.
After helping over 100 customers with termite problems, I’ve learned that pellet location is the best clue for targeting treatment. The termites are almost always feeding right above where the pellets pile up. This makes treatment much more focused and effective.
What Pile Size Tells You
The amount of termite pellets you find gives you some clues about the problem, but it is not a perfect measure. Bigger piles might mean either an older colony or several colonies in the same area. But even slow-feeding colonies can build up large piles over a few years.
Mature drywood colonies usually have a few hundred to a few thousand termites. That is much smaller than subterranean termite colonies. More pellets generally mean either longer feeding time or more colonies, but you need a pro to determine colony size.
Fresh vs Old Termite Pellets: How to Test for Active Feeding
One of the biggest questions homeowners ask is whether the termite pellets they found mean the termites are still active. You cannot tell by looking at them. Old pellets can sit unchanged for years after termites die or move on.
I always share this tip with customers because it gives a clear yes-or-no answer. Sometimes shaking or vibrations from nearby work can knock loose old pellets, which leads to a false alarm.
Once you’ve confirmed active feeding, it’s time to bring in a professional. The longer termites go untreated, the more damage they do to your home’s wood structures.
Drywood Termites in the DMV Area
In the DC, Maryland, and Virginia area, subterranean termites are far more common than drywood termites. Still, drywood termites do show up along the coast, especially in Virginia’s tidewater region.
The dark southern drywood termite has been found at Cape Henry, Virginia, and other coastal spots. While these cases are less common than in warmer states, they do happen. Warmer weather patterns may also increase the chances of drywood species taking hold in our region.
Most drywood termite problems I see in the DMV area come from “hitchhikers.” These are termites that rode in on used furniture, boats, or shipped goods. Species like the West Indian drywood termite are well known for spreading this way. So even if you live north of typical drywood termite areas, you are not immune.
Why You Should Act Fast After Finding Termite Pellets
Finding termite pellets should prompt you to act right away. Drywood termites are very destructive because they eat wood both across and along the grain. They often leave just a paper-thin shell on the outside. By the time you can see damage on the surface, there is usually much worse damage hidden inside.
At that Alexandria inspection I mentioned earlier, we found that termites had eaten almost all the way through the window sill. Only the paint was left as an outer barrier. The small bulge the homeowner noticed was the paint starting to give way. It was a perfect example of how well hidden drywood termite damage can be.
On top of that, once a drywood colony matures (usually after 4-5 years), it starts producing swarmer termites that fly off to start new colonies in nearby wood. This spreading effect can make treatment harder and more costly if you wait.
Treatment Options for Drywood Termites
When termite pellets confirm an active drywood termite problem, there are several treatment options. The right choice depends on how widespread the problem is, how easy it is to reach the affected areas, and your preferences.
Whole-Structure Treatments
For widespread problems or when the full extent is unclear, whole-structure treatments target all colonies at once. Fumigation with sulfuryl fluoride works very well when done right. It does require you to leave your home for 2-3 days and gives no lasting protection after the treatment.
Heat treatment is another whole-structure option. It raises the inside temperature of infested wood to 120 degrees for at least 33 minutes. This method uses no chemicals but can miss areas that don’t get hot enough due to “heat sink” spots.
Spot Treatments
When the problem is contained and easy to reach, spot treatments can get the job done. These involve drilling into the wood and injecting liquids, foams, or dusts right into the termite tunnels.
If the wood is badly damaged, removing and replacing it gets rid of the colony completely. There are also microwave and electrical treatments, but they depend on finding the exact colony location.
At Better Termite & Pest Control, we’ve used many treatment methods based on each home’s specific needs. We focus on getting rid of current colonies while also taking steps to prevent new ones.
Keeping Termites Out After Treatment
After getting rid of the termites that were making termite pellets, ongoing checks are key to long-term protection. We suggest cleaning up all remaining pellets and setting up regular inspections (three times per year) to watch for new pellet buildup.
Steps to keep termites out include:
- Sealing cracks and gaps where termites could enter
- Putting fine mesh screens over vents
- Applying borate treatments to exposed wood
For a full guide, check out our termite prevention tips. Keeping humidity low in crawl spaces also makes these areas less inviting to drywood termites.
For homeowners who have dealt with drywood termites, follow-up checks are so important. Catching new activity early makes treatment much simpler and cheaper.
When to Call a Professional
While homeowners can spot obvious termite pellets, a professional inspection gives a full picture of how far the problem has spread. Licensed techs know where to look for hidden kick-out holes. They can also tell the difference between different types of wood pest damage.
Our inspection process includes checking accessible wood, looking for mud tubes and other termite signs, and using tools to find hollow spots inside wooden structures. This thorough approach makes sure we identify the problem correctly and suggest the right treatment.
A professional check is especially important when termite pellets show up in more than one spot, or when you suspect structural damage. Our team’s 300 years of combined experience helps homeowners understand their options and make smart choices about treatment.
If you’ve found what you think are termite pellets in your DMV-area home, our team is ready to help protect your property from further damage.
