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 Post subject: Wood insect/worms
PostPosted: Feb Tue 05, 2019 5:59 pm 
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Joined: Nov Sun 29, 2015 1:22 am
Posts: 656
Location: Parkland, Florida
I'm doing a restoration on a set that came from California and it has been infected with wood insects or wood worms.
I went on line and the most reasonable way to eradicate the problem was to place the wood in 160 degrees F oven for 24 hours. I tried and did not work. I still see wood dust coming out of the holes.
Any chemicals that I could use?
Any suggestions?
Thanks

Carlos


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Tue 05, 2019 9:20 pm 
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Location: S. Dartmouth MA 02748-1225 USA
Place the panel in a garbage bag with aromatic cedar planking. Apply more cedar oil to the cedar wood, leave enclosed for as long as possible...

Since the panel is finished most any solvent will ruin the finish. I'm surprised the heat didn't cook them. I would also suggest moth balls, but that smell will permeate the panel and stink for a long time.

YMMV

Chas

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 Post subject: Re: Wood insect/worms
PostPosted: Feb Wed 06, 2019 12:08 am 
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Location: Highland, MI
Excessive heat should work. Try maybe a bit more temperature for a longer time.

If you have access to excessive cold, that can work as well. I had an infested cabinet brought back from Florida. I left it out in the sheltered cold for a month. It got down to 10°F, which seemed to do it. Two years later there is no activity.

It's not so much the insects that need to be killed as the eggs. The eggs are more resilient.


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Wed 06, 2019 1:54 pm 
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Joined: Nov Sun 29, 2015 1:22 am
Posts: 656
Location: Parkland, Florida
Thanks for the replies.
I made room in the freezer and got the infested wood in it. Temp was 10 degrees.
I'll leave in there for about 4 days and I will report if that did the job.

Carlos


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Wed 06, 2019 9:46 pm 
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Joined: Jan Tue 31, 2012 1:55 am
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Location: Mountains of Mourne. Ireland.
-4°F for three weeks would be more like it.

Greg.


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Wed 06, 2019 10:28 pm 
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Joined: Nov Sun 29, 2015 1:22 am
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Location: Parkland, Florida
Wow!!! -4 degrees.
I'll see if I could adjust the temperature.
Three weeks I could wait. Maybe I'll leave for a month at the lowest temperature I could get.
Thanks, Greg,

Carlos


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Wed 06, 2019 11:52 pm 
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Location: Mountains of Mourne. Ireland.
My belt-and-suspenders approach of three weeks may not be necessary. Lol


Chilling Procedure.
1. Wrap the infested item in a cloth bed sheet.
2. Place sheet-covered items in a large polyethylene bag (e.g., trash or dry-cleaning bag), or simply wrap them in polyethylene and tape the seams. Force as much air out of the bag as possible.
3. Place bagged item in freezer (- 4 degrees F / - 20 degrees C) for seven days.
4. After seven days, carefully remove item from freezer.
5. Before removing item from polyethylene bag, allow it to gradually warm up again to room temperature. This may take up to 24 hours for larger items. This step ensures that any condensation forming will occur on the outside of the polyethylene bag, rather than on the item itself.
 
The above chilling procedure generally is effective in killing all pest life stages, including eggs. Adverse effects seldom occur to furniture or their veneers and finishes. Wood inlays or ‘mother-of-pearl’, however, may be affected. Infested rugs, woolens, fabrics pet food and animal trophies can also be treated in this manner, again with negligible adverse effects. However, extra care should be taken when handling crafts and other fragile items immediately after freezing and before they have returned to room temperature. 

Thermal Deinfestation of Household Items.
University of Kentucky College of Agriculture. 
https://entomology.ca.uky.edu/ef640

Greg.


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Fri 08, 2019 1:51 am 
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Location: Parkland, Florida
Hey Greg, thanks again.
Thanks for the link.
I will try the oven again with water in a pan and will raise the temperature to 165- 170.
If this temperature does not work, then I will do the one week freezing method.

Carlos


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Sat 09, 2019 2:19 am 
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Location: Mountains of Mourne. Ireland.
I've just reread your post and see that you have already had it in an oven for 24 hours!

The holes are flight-holes - the "worm" has turned into a beetle and vacated the cabinet.
Elvis has left the building... :)

It's hard to tell from the photo, but those may be old flight-holes. (It looks like some aged dirt around the edges of the holes)? None of them look like new/fresh holes.

One way of seeing if any are still emerging is to place it in a sealed room with a closed window. They can be observed at the window.
or... place it in a large rubble sack or woodshop dust extractor bag. They are heavy duty clear plastic.


If you have an airline, blow out the holes.
Place some low-tack masking-tape over the holes, and see if any new ones appear.

Why would you put water in the oven?
It could have a detrimental effect on your wooden cabinet.
It's not just the heat of the oven that's working - it's removing all water content.


Greg.


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Sun 10, 2019 1:49 pm 
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Joined: Nov Sun 29, 2015 1:22 am
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Location: Parkland, Florida
Hi Greg.
I first removed the old finish with a scraper. Then I used Klein stripper to remove the hard spots. I sanded the wood and the next day noticed saw dust (tiny sand like pellets) coming out of the holes. I though it was dust from the sanding and went ahead and stained it and applied lacquer.
The next day I tapped the wood and more dust came out. After the oven treatment I used my compressor and blew air though the holes. A day later I tapped the wood and more dust came out. I concluded that what ever was in the wood was still eating and excreting the saw dust.
Now it's been in the freezer for 3.5 days.
I'll wait another 4 days and evaluate the results of this treatment.
Thanks
Carlos


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Mon 18, 2019 10:55 pm 
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Joined: Nov Sun 29, 2015 1:22 am
Posts: 656
Location: Parkland, Florida
Well, the freezing treatment did not work.
freezer temperature oscillated between 0 and -4 degrees. I had the wood frozen for 11 days. I still get saw dust coming out of the worm holes.
I will try the oven for for 24 hours at 160 degrees with a pan of water in it.
I'll let you know the results tomorrow.

Carlos


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Tue 19, 2019 3:36 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 4541
Location: Charleston, W.Va.
Hi Carlos,
I am a finish carpenter, with 45+ years experience at the trade. While I have not often seen such severe infestations in interior furniture and woodwork, when they do occur they can be very difficult to deal with.

Obviously this extreme cold/heat routine you have tried has failed, as it usually does. It is time to try something more aggressive, specifically chemicals.

The most successful do-it-yourself approach will be to use a borate based product such as "Bora-Care" or "Timbor". Proper use and application instructions for these can be found via a website search.

But a far better approach, and the one I recommend, is to contact a professional. You should talk with a qualified pest control company in your area. Not a fly-by-night amateur, but someone with a known reputation who has been in the pest-control business for many years. They have access to chemicals which are not available for sale to the general public, and are trained and licensed to apply them.

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 Post subject: Re: Wood insect/worms
PostPosted: Feb Tue 19, 2019 10:35 pm 
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Joined: Nov Sun 29, 2015 1:22 am
Posts: 656
Location: Parkland, Florida
Well, the bugs are still eating wood!
Yesterday I set the oven at 160 degrees with a pan of water in it for about 15 hours, then I raised it to 200 and left the wood at that temperature for 1 hour.
They are still eating wood!
I was tempted to use the chemicals suggested by Poston Drake, but because of price and all the existing damage to the wood, I have decided to replace the wood.
Thanks for all your input!

Carlos


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Tue 19, 2019 11:39 pm 
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Location: Mountains of Mourne. Ireland.
Man... those must be major league bugs!

I have a couple of cans of DDT in the shed.
Not sure if they would make the journey, or even pass postal rules, their bottoms look a bit rusty... :shock:

By more plastic radios. Lol
Greg.


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 Post subject: Re: Wood insect/worms
PostPosted: Feb Wed 20, 2019 1:47 am 
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Joined: Jul Sun 26, 2015 11:34 pm
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Location: Hurdle Mills, North Carolina
They are powder post beetles and about the only way to rid a piece of wood is to use the recommended chemicals, been there done that!

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 Post subject: Re: Wood insect/worms
PostPosted: Feb Wed 20, 2019 1:57 am 
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Joined: Nov Sun 29, 2015 1:22 am
Posts: 656
Location: Parkland, Florida
Thanks guys.
I think I'll stick to plastic!
Carlos


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 Post subject: Re: Wood insect/worms
PostPosted: Mar Sat 02, 2019 9:25 pm 
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Joined: May Thu 14, 2015 4:15 pm
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Location: Dallas, TX
If the bugs are that nasty I hope you burned the wood! You don't need anymore nasty creatures in Florida.

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Tim
It's not the Destination, It's the Journey.


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 Post subject: Re: Wood insect/worms
PostPosted: Mar Wed 20, 2019 8:46 am 
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Joined: Feb Mon 04, 2008 3:20 am
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Location: Coopersville, MI 49404-9643
You can always buy an ozone generator, put it and the cab in a large plastic bag and leave it run for several days.
Ozone will kill any organic life.

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 Post subject: Re: Wood insect/worms
PostPosted: Mar Wed 20, 2019 6:36 pm 
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Joined: Oct Thu 27, 2011 8:39 pm
Posts: 998
Location: Houston, texas
I once went with the salesguy on a sales call to a place that made sterile bandages and the like.
They placed the product on a conveyor belt that went behind a thick wall then a rack of cobalt 60 pencils would come up and irradiate everything. They of course would never accept outside work but there are places that do irradiate medical samples so the workers are not exposed to HIV and the like. There is one place around Chicago that does that- I have no idea how to locate them.
BTW cobalt 60 does not destroy the 'mad cow' disease


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 Post subject: Re: Wood insect/worms
PostPosted: Apr Fri 05, 2019 5:33 pm 
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Location: Highland, MI
Carlos, why was water used in your oven treatment? These bugs crave hydration. They should be denied any form of water.


Last edited by Kestas on Apr Fri 05, 2019 8:50 pm, edited 2 times in total.

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