|Article From Houselogic.com
By: Brad Broberg
Published: March 09, 2010
Early detection can protect your home from damage by wood-destroying insects.
One of the biggest threats to your house comes in the form of tiny pests that silently and invisibly consume or live in wood-from the sills of
your foundation to the rafters of your roof. Known by exterminators as WDIs, wood-destroying insects cause more than $1 billion a year in
property damage in the United States, according to Orkin, a nationwide pest-control company.
"It's not unheard of to see a home with termite damage in the tens of thousands of dollars," says Greg Bauman, senior scientist with the
National Pest Management Association. "I've personally seen a home with $1 million in repair costs. It probably would have been better to
bulldoze the house."
That may be an extreme case, but it demonstrates that what you can't see can hurt you. WDIs can be hard to detect with the naked eye
unless you know what to look for.
Depending on moisture levels, climate, and location of a colony (they're more active in warm, moist conditions), it could take three to eight
years before the signs of an infestation-serious damage to your house-are apparent.
"If you don't catch them early, you're setting yourself up to spend a lot more on both
treatment(http://www.houselogic.com/articles/treatment-options-for-getting-rid-of-insects/) and repairs than you otherwise would," says
Ron Harrison, technical director at Orkin.
Here are a few tips for how to spot wood-destroying pests.
Habitat: The most common type, subterranean termites, cause 95% of all termite damage in North America. Found in every state except
Alaska, termites(http://www.pestworld.org/for-consumers/pest-guide/pestcategory/termites) are most prevalent in the South; the so-called
termite belt stretches across the Southeast from Virginia to Texas.
Clues: You can suss out an infestation by poking wood with a screwdriver; if the tip goes in easily or you hear a hollow sound when you
tap the wood with the handle, you might have a problem.
Be on the lookout for a thin gritty gray-brown film on the surface of damaged material. And look for narrow mud tubes on both the interior
and exterior of your walls and foundation. Termites travel though these tubes between their colony below the ground and their dinner
The one time they come out in the open is when they swarm. Swarms consist of flying "reproductives" that leave the colony, mainly in
spring, to mate and start new colonies. You may not spot the swarm itself because the love bugs shed their wings and head underground
within a few hours.
Instead, look for discarded wings that resemble fish scales. Swarms can emerge indoors or outdoors. Evidence of an indoor swarm,
such as discarded wings or the corpses of termites that couldn't find a way out, is a sure sign your home is infested.
Most likely to damage: "Almost anything that contains cellulose, the main component of wood, including wood paneling, paper products,
cardboard boxes, art canvases, the paper covering of sheet rock, carpeting," according to the North Carolina Cooperative
Habitat: Carpenter ants(http://www.pestworld.org/for-consumers/Pest-Guide/Pest/Carpenter-Ants) bore into damp and decayed wood to
make nests. Most common in northern states, these pests forage through your home, mostly at night, looking for water and food. They'll
eat just about anything people do and are especially fond of sweets, fat, and protein.
Clues: Look for swarmers in the spring and for piles of frass-a mixture of wood shavings and fecal matter. Rustling sounds may indicate
Most likely to damage: "Tunneling may cause serious structural damage if it occurs in key timbers," according to the Maryland Cooperative
Extension(http://extension.umd.edu/). "The existence of a carpenter ant colony inside a structure is usually most important as a sign that
there is or has been a water problem."
Habitat: Common in all regions, carpenter bees(http://www.pestworld.org/for-consumers/Pest-Guide/Pest/Carpenter-Bees) burrow into
wood-preferably unfinished-to make nests. They drill almost perfectly round entry holes about 1 to 2 inches in diameter that lead to
tunnels where they lay their eggs.
Clues: Look for them hovering near eaves, decks, and siding.
Most likely to damage: Carpenter bees are less likely to cause serious structural damage than termites or carpenter ants. However, their
entry holes can allow moisture to enter the wood.
Habitat: These wood-boring beetles(http://www.pestworld.org/for-consumers/Pest-Guide/Pest/Powderpost-Beetles) lay their eggs in
cracks, crevices, and wood pores. The hatching larvae then feed on the wood. Present in all regions.
Clues: Look for powdery deposits of frass and pinhead-size holes made by adult beetles exiting the wood. The peak time for beetles to
emerge is May through August.
Most likely to damage: Anobiid powderpost beetles attack softwood species such as spruce, pine, and fir that are commonly used to
make floor joists, wall studs, and other structural lumber, according to the North Carolina Cooperative Extension. Lyctid powderpost
beetles attack only hardwoods, such as oak, ash, hickory, and maple used in furniture, cabinets, wooden floors, and some interior
CALL IN A PEST INSPECTOR
No matter how vigilant you are, consider scheduling a professional inspection at least every few years, says David Tamny, owner of
Professional Pest Inspection in Columbus, Ohio, and president of the American Society of Home Inspectors(http://www.ashi.org/).
"Professionals bring a skill set that enable them to spot things a lay person could miss," Tamny says.
Many pest control companies will perform a free inspection for WDIs and for conditions conducive to
infestations(http://www.houselogic.com/articles/prevent-insects-damaging-home/), such as moisture. Keep in mind, though, that pest
control companies hope the inspection leads to the purchase of treatment services. Hiring someone who performs only inspections
eliminates that potential conflict of interest, Tamny says.
A WDI inspection will likely cost between $100 to $200, depending on the size of the home. Expect the inspector to pull on coveralls and
spend about an hour probing your home from the attic to the crawl space for visible signs of infestation and damage.
For around $100 to $400 a year, some pest control companies will perform annual WDI inspections that come with warranties. If the
inspection reveals WDIs and/or damage, the company will eradicate the infestation and make any necessary repairs at no extra charge.
One possible catch: You may be required to sign up for a round of preventive treatment at a one-time cost of $1,000 to $5,000.
Brad Broberg is a freelance writer from Federal Way, Wash. A former newspaper reporter and editor, he writes about business and real
estate for REALTOR® Magazine and the Puget Sound Business Journal, among others. He's lived in the same home for 22 years-a
home he shares with seven towering Douglas firs.
Reprinted from HouseLogic (houselogic.com) with permission of the NATIONAL ASSOCIATION OF REALTORS (R).
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