Most homeowners associate a termite infestation with damaged structural timber, rotting deck boards, and hollowed-out wooden beams. This insect is famous for causing billions of dollars in property damage every year by chewing through the frames of houses. Because of this reputation, people often assume that a home built with brick, stone, or metal is completely safe from an infestation.
However, assuming these pests only consume timber leaves other valuable parts of your property vulnerable. Wood is simply the most abundant source of their actual target diet. Understanding what these insects are really hunting for can help you identify a pest problem before it spirals out of control.
The short answer is no. Termites do not strictly eat wood. They actually consume cellulose, a foundational building block found in all plant life. This means that any material derived from plants can potentially become a meal for a hungry colony. From the books on your shelf to the drywall in your living room, the menu for these pests is much larger than most people realize.
What Exactly is Cellulose?
Cellulose is an organic compound that gives plants their structure and strength. It is the most abundant organic polymer on Earth. Humans cannot digest cellulose, but termites have specialized microorganisms living inside their digestive tracts. These protozoa and bacteria break down the tough cellulose fibers into sugars, which the insects then use for energy.
Because wood is highly concentrated with cellulose, it serves as the primary food source for a colony. A dead tree or a wooden house frame provides a massive, reliable energy supply. But when timber becomes scarce, or when a colony expands into the interior of a home, they will readily consume other cellulose-rich materials they encounter along the way.
Unexpected Household Items Termites Eat
Since cellulose is processed to create many common household goods, a termite infestation can spread far beyond your wooden floorboards. Here are several surprising materials these pests will actively consume.
Paper and Cardboard
Paper products are essentially pure cellulose. Cardboard boxes stored in dark, damp basements or attics are highly attractive to foraging termites. They will easily chew through storage boxes, potentially destroying family photo albums, important financial documents, and antique book collections. If you store items in cardboard boxes on a concrete basement floor, you might be providing an easily accessible buffet for subterranean colonies.
Drywall and Sheetrock
The interior walls of most modern homes are constructed using drywall, also known as plasterboard or Sheetrock. While the core of drywall is made of gypsum powder (which termites do not eat), the front and back of the panels are wrapped in thick paper. Termites will gladly strip the paper backing right off the gypsum. Homeowners often discover an infestation when they notice small, pinhole-sized tracks or bubbling paint on their interior walls, indicating the pests are eating the paper directly beneath the surface.
Cotton and Linen Clothing
Fabrics made from plant-based fibers contain significant amounts of cellulose. Cotton, linen, and hemp materials can all fall victim to a hungry colony. While termites do not typically hunt for clothing in a well-lit bedroom, they will readily consume natural fabrics left in dark storage areas. If a colony has already infested a wooden wardrobe or a cardboard box containing cotton garments, they will eat through the clothes as well.
Do Different Termites Prefer Different Foods?
All termites rely on cellulose, but different species have distinct preferences for how they source it. Knowing which type of pest is common in your region can help you tailor your property maintenance.
Subterranean Termites
These are the most destructive species and are found across most of the United States. They live underground and require constant contact with moisture. Subterranean termites prefer soft, slightly decayed wood. They will build mud tubes along concrete foundations to reach the wooden structures of a house. Because they travel from the ground up, they frequently encounter and consume cardboard boxes and drywall near the floor level.
Drywood Termites
Unlike their subterranean cousins, drywood species do not need contact with soil or high moisture levels. They extract all the water they need directly from the wood they consume. These pests often infest roof materials, attic framing, and hardwood furniture. They are highly likely to consume wooden cabinets and any paper products stored closely alongside them.
Dampwood Termites
Dampwood termites require very high moisture levels to survive. They rarely infest homes unless there is a severe plumbing leak or significant water damage affecting the structure. They prefer wet, rotting logs and decaying organic matter outdoors.
Frequently Asked Questions
Can termites eat through plastic or metal?
Termites cannot digest plastic or metal. However, they have incredibly strong jaws. If a plastic wire casing or a thin metal foil blocks their path to a food source, they can chew through these materials to get to the cellulose on the other side. This behavior can lead to serious electrical hazards if they damage wiring inside your walls.
Do termites eat concrete?
No, concrete contains zero cellulose. Termites cannot consume or digest it. They can, however, squeeze through microscopic cracks in a concrete foundation to reach the wooden framing above. This is why homes built on concrete slabs are still highly vulnerable to infestations.
Will termites eat synthetic fabrics like polyester?
Synthetic fabrics are made from plastics and petrochemicals, meaning they do not contain cellulose. A colony will ignore polyester, nylon, and acrylic clothing.
Protecting Your Home from Property Damage
Realizing that termites eat much more than just wood changes how you should approach home defense. Pest control requires a comprehensive strategy that limits access to all cellulose materials.
Start by swapping out cardboard storage boxes for heavy-duty plastic bins, especially in basements, garages, and attics. Keep firewood, lumber, and mulch piles at least twenty feet away from your home’s foundation. Fix leaky pipes and ensure your gutters direct water away from the house, as moisture attracts these pests to your property. Finally, schedule an annual inspection with a licensed pest control professional. Early detection is the most effective way to protect your framing, your drywall, and your cherished belongings from irreversible damage.