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Yesterday I had the unpleasant job of letting a realtor and my client know that a home that was other wise not too bad, had been destroyed underneath by a secretive and very destructive wood destroying organism. I am speaking of the dreaded anobiid beetle. I have heard people say, "ah, don't worry about them, carpenter ants are the bad one in Washington." While both pests are destructive, the ants tend to give clues that they are around. My clients have found them in their cupboards, walking across the floor and one man even found them in the dishwasher. Most people are grossed out by ants inside and hire a professional to come in and treat for carpenter ants. But the anobiid beetle is never seen, smaller than a grain of rice, and does most of the damage inside the wood. It burrows and eats for 5 to 7 years, exits as an adult (laying eggs that will become larvae) leaving a BB pellet sized hole and the cycle continues almost forever unless something is done about it. Unless major changes have taken place in a crawl space it is pretty safe to assume that the infestation has NOT died out. People ask if you can see them running around. The answer is no, they are not that kind of beetle. In short, the key to naturally getting rid of them is providing better ventilation, controlling plumbing leaks and runoff water, getting a vapor barrier down and, while not a natural treatment, often hiring the services of a chemical applicator. But, without taking the other measures, you have only partially addressed the problem. The conducive conditions must go! Get at the source, don't just treat the symptoms. In case anyone wonders just how serious this infestation can be I have posted photos from structural members of the home. When I say destroyed, I mean the wood is like Styrofoam and crumbles if squeezed by hand in mostlocations. The anobiids were in posts, beams, joists, sill plate, rim joist and sub-floor. I could not see the wall studs. This home did not need a chemical treatment it needed a transfusion of new wood. Is it worth fixing? I guess the seller has to make that decision. It might make more sense to build a new home that was commensurate with the location.

Bellingham WA home inspector       Bellingham WA home inspector

Anobiid  

   

Thanks for looking.

Steven L. Smith

Bellingham WA home inspector

www.kingofthehouse.com

 

        

        

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11 Comments on Anobiid Beetles -- Smaller than a grain of rice yet they destroyed this home!

JUN
22
2007
494,048 Points 15 Featured Posts Localism Sponsor Outside Blog

H there,

Yikes, I've never heard of anything like this before. Better to find out now, than later. Steven, I love reading your stuff, it's always so darn interesting. Thanks!

11:58pm • #1
JUN
23
2007
158,238 Points 1 Featured Post Hit Router Attended Rain Camp
Yikes!  I am so glad I was not in your shoes to deliver that news!  Poor homeowner, I couldn't imagine finding that out!
12:07am • #2
1,103,603 Points 45 Featured Posts Outside Blog
It is because of this kind of pest, so common in our damp Pacific Northwest, that I scoff when I hear inspectors from other states imply that those of us in WA are uptight about wood destroying organisms. Even some inspectors in this state want to see inspectors excluded from having to be WDO regulated. I think that would be a terrible decision for our state's consumers. I think that probably the most money we save consumers, as inspectors, is locating problems like those detailed in this post. The anobiid is not a common pest in most other parts of the country, nor is the dampwood termite, but we have both along with  another species of beetle, another species of termite, several varieties of wood destroying ants and conditions that make rot the most common WDO.
12:19am • #3
175,181 Points 10 Featured Posts Outside Blog
Steven - This is horrible.  Poor owners.  Is most of the value in the land and view.  i sure hope so.  Do you have termites there?  Or does the winter freeze kill em off?
1:01am • #4
1,103,603 Points 45 Featured Posts Outside Blog
Marlene. I do not have a sure answer on the property value vs the house. If there were minor things wrong, then they could sell it. But this needs almost every stick of wood in the crawl space replaced. Yes, we have dampwood termites (that only get into damp wood hence the name) and we have subterranean termites but they are more common east of the mountains than in my region.
1:06am • #5
144,919 Points 2 Featured Posts Outside Blog
wow what a mess, I just watch a flip this house type show yesterday and the buyers did not get a home inspection because they wanted to save $400 and cost them $3K in dry rot repairs and another $3K in new updated plumbing! Now if they knew what they were getting into prior it wouold have saved them a lot of money and troubles!
10:36am • #6
JUN
25
2007

Wow that really sucks!  Are those kind of dammages covered under their homeowner policy? I surely hope so.  Maybe the bright side of it if it is, is that they will get a new house with the insurance paying for it!  If not I feel really bad for them. 

I guess with all the rain and beautiful trees here in the Northwest comes the bugs that feast on them. 

7:22pm • #7
JUN
26
2007
1,103,603 Points 45 Featured Posts Outside Blog

Geoff,

That is a maintenance issue, far as insurance is concerned, so I have never heard of them being involved at all. If a person is living in a home, they have to fix it. If an inspector catches serious damage the deal goes south or it is repaired or a price reduction negotiated. Another good reason for an inspection!

12:14pm • #8
The only real insurance to protect a homeowner from this kind of damage is to remove conducive conditions.  Anything that raises the moisture level in the crawlspace is suspect.  That includes things like inadequate ventilation, a poorly done or nonexistant vapor barrier, clogged gutters and downspouts, vegetation against the house, grade sloping toward the house to name a few.  Good post Steve.
1:55pm • #9
JUL
01
2008
2 Featured Posts

Wow, that is some serious destruction for such a small beetle.  I have never heard of that type of beetle and don't think they are a problem here, but now I will research it.

11:38am • #10
1,103,603 Points 45 Featured Posts Outside Blog

Joshua and Kathy,

I think you probably luck out on this pest. They like moisture and damp environs, I do not think you would supply that. However, your trade off is more termite activity in Arizona.

11:50am • #11

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Steven L. Smith, Bellingham, Wa. Home Inspector

Bellingham, WA

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King of the House Home Inspection, Inc

Address: Bellingham, Ferndale, Lynden, Blaine, Sumas, Nooksack, Lake Whatcom, Lake Samish, Anacortes, Mount Vernon, Whatcom County, Bellingham, WA, 98225

Office Phone: (360) 676-6908

Cell Phone: (360) 319-0038

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Home inspection information designed to educate the real estate buyer and the real estate professional. Blog posts include general information and information specific to the Pacific Northwest region.


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