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• November 5, 2025
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Learn Their Behavior and How to Prevent Them

Termites are known as “silent destroyers” because they can cause serious structural damage to a home without being detected. According to pest control experts, Eastern subterranean termites—the most common species in the U.S.—invade approximately one in every five homes each year. The average cost of repairing an infestation is around $3,000 per home, and nationwide, it is estimated that Americans spend over $5 billion annually on termite damage and prevention.

Government data confirms that this threat is far from trivial. The Environmental Protection Agency (EPA) reports that termites cause “billions of dollars in structural damage each year,” while homeowners spend over $2 billion on treatments. The U.S. Department of Agriculture’s Forest Service (USDA) estimates annual costs ranging from $1 to $7 billion, noting that only a small fraction of the country’s more than 105 million single-family homes receive preventive treatments.

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Termite Behavior and Types

Termites are social insects that live in colonies composed of castes (reproductives, workers, and soldiers). They feed primarily on cellulose found in wood, paper, and certain building materials. In the U.S., there are three main groups of termites:

• Subterranean termites: Live in soil and build mud tubes for protection while foraging. They are responsible for most structural damage and can be identified by the presence of swarmers (winged termites) in spring or mud tubes along walls and beams. The USDA describes them as the most economically destructive wood pests in the country.
• Dampwood termites: Prefer moist or decaying wood. They leave behind small piles of droppings that resemble sawdust near infested areas.
• Drywood termites: Do not need contact with soil. They infest dry wooden structures and furniture, leaving hollowed-out wood behind.

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Signs of Activity

Although termites often hide within walls or floors, these signs may indicate their presence:

• Swarmers: Winged termites seen around lights or windows, especially after rain or in spring.
• Mud tubes: Brown tunnels running along walls, basements, or foundations.
• Hollow wood or bubbling paint.
• Droppings: Small mounds near door frames, windows, or furniture.

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Why Are Termites a Problem?

Beyond the structural damage, the economic impact is severe. Most insurance policies do not cover termite damage, as it is considered preventable. Repair costs for a single infestation average around $3,000, and federal agencies estimate total annual losses between $1 and $7 billion. Despite this, only a small percentage of U.S. homes have preventive protection in place.

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Structural and Regional Impact

Termites are found in nearly every U.S. state except Alaska, thriving particularly in warm and humid regions. Homes built on slab foundations or surrounded by landscaped areas in direct contact with the structure are more vulnerable. If left untreated, a colony can weaken beams, floors, and frames, compromising a home’s structural integrity.

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How to Prevent an Infestation

The best prevention strategies combine government recommendations and professional advice. The EPA suggests:

• Keeping the soil around the foundation dry with proper drainage.
• Sealing foundation cracks and repairing leaks immediately.
• Clearing vents and ensuring vegetation does not touch the structure.

Other effective measures include:

• Use proper materials during construction: Concrete bases and physical barriers offer greater protection.
• Schedule regular inspections: At least once a year; professionals can detect hidden colonies.
• Keep wood and moisture away from the home: Store firewood away from the house, trim trees and shrubs, and fix leaks promptly.
• Seal entry points: Close gaps and holes around pipes and cables.
• Apply preventive treatments: Certified technicians can install chemical barriers or bait systems approved by the EPA for residential use.

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Termites can cause significant structural damage if not detected early. Prevention and periodic inspections are the best way to protect your home.

At Cousins USA Pest Control, we follow EPA and USDA guidelines, offering professional, safe, and reliable solutions to help you prevent infestations responsibly.