Tim-bor Professional

$14.70 - $90.81

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Not for Sale to: CT, NY
NY residents, see our New York Pest Control page.

4.5 out of 5 stars Rating: 4.6

73 Reviews | 81 Q&A


{ $14.70 { $9.70 $64.80 $90.81 $86.11
  Size/Description Price/Ea. Qty
Tim-bor Professional bag (1.5 lb)

Buy 1 or more: $14.70 each

Buy 4 or more: $9.70 each

Tim-bor Professional (8 x 1.5 lb. bags) box (8 x 1.5 lb bags) $64.80
Tim-bor Professional - 25 lbs. bucket (25 lbs)

Buy 1: $90.81 each

Buy 2 or more: $86.11 each

Total Price: $0.00

Availability: Normally ships in 1 business day.
For large order quotes, please call us at 1-866-581-7378.

Tim-bor Professional - 25 lbs.

Tim-bor Professional should only be applied for eradicating fungus off of wood and for protecting new wood from future infestation.  If treating any wood with an existing infestation, you should always use Bora-Care. Bora-Care will penetrate through an entire piece of wood much deeper and ensure proper control, and it will protect the wood you are treating forever.

Tim-bor Professional is an insecticide, fungicide and wood preservative for the protection and treatment of lumber against fungal decay and wood destroying insects. Tim-bor is a water soluble, inorganic borate salt with insecticidal and fungicidal properties. It is an effective treatment for wood to kill and prevent infestations of decay fungi including white rot, brown rot (i.e. Poria) and wet rots. Tim-bor does not treat mold or prevent mold from growing.

Timbor can be used as a Dust, Liquid, or Foam. It is water soluble, economical, odorless and can be used in conjnction with fumigation for residual protection. It is formulated with a concern for the environment.

Timbor is only absorbed 1/4 inch into the wood and leaves a white powdery coating. If you are treating thick wood or want it to look like its original state, then purchase the BoraCare product.

What is Timbor?

Timbor is a wood preservative that works as an insecticide and fungicide.

What is the active ingredient in Timbor?

The active ingredient in Timbor is disodium octaborate tetrahydrate, a natural borate compound.

What is a borate compound?

Borate compounds are derived from mineral deposits that contain the element Boron. These compounds are use in the production of many products including ceramics, glass and medicines and also work extremely well as insecticides and fungicides.

Why is Timbor considered an insecticide and fungicide?

Insects are exposed to the active ingredient by eating treated wood or by ingestion while grooming. Borates are a contact toxicant to fungi. The borates prevent metabolism of food by insects and fungi causing death.

How is Timbor applied?

Timbor is applied to the surface of bare wood as a liquid. It can also be applied as a dust into void attic and wall void areas for labeled insect control.

How does Timbor work as a wood preservative?

When Timbor is applied as a liquid to the surface of bare wood, it diffuses into the wood to make the wood itself toxic to wood destroying organisms such as wood decay fungus or drywood termites.

Is Timbor concentrate a liquid?

Timbor comes in a powder form that is used as a powder or mixed with water to form a liquid solution. To create a 10% solution mix one pound of Timbor to one gallon of water. This solution must be applied twice to a bare wood surface. To create a 15% solution, mix 1.5 pounds of Timbor to one gallon of water. This solution can be applied only once to the wood surface.

Is Timbor labeled to treat wood decay fungus?

Timbor is labeled for the control and prevention of wood decay fungi including white rot, brown rot, poria and wet rots.

Is Timbor labeled for the control of carpenter ants?

Timbor is labeled for the control and prevention of carpenter ants by applying Timbor dust into active ant galleries and into areas where ants may enter the structure.

What wood destroying organisms is Timbor labeled to control?

Timbor is labeled for the control and prevention of drywood termites, wood destroying beetles, wood decay fungi, carpenter ants and termites.

Can Timbor be foamed?

Timbor can be foamed using equipment designed for foaming applications. Foaming requires a 15% solution in conjunction with a foaming agent. A dry foam is recommended for best results.

Does Timbor affect ornamental plants?

Yes, over spray on plants or spills near the plant roots can kill or retard plant growth.

Rating Snapshot

5 stars   55
4 stars   11
3 stars   2
2 stars   3
1 star   2

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Average Customer Rating
4.5 out of 5 stars (73)

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Most Helpful Customer Reviews
  • 31 of 31 people found this review helpful:

    5 of 5 stars  Timbor DIY vs Commercial
    By Jeff in South Florida on 05/28/2011

    A national chain quoted me $2,900 to spray the trusses of my new home under construction. I paid about $65 for the Timbor and spent about 4 hours spraying. Absolutely worth it!

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  • 28 of 32 people found this review helpful:

    5 of 5 stars  Good Stuf
    By Tim in San Diego, CA on 10/18/2010

    The price at DoMyOwnPestControl was better than I could find elsewhere and their support was great. This stuff (borate minerals) has been around a million years and is known to make wood toxic most insects including drywood termites, carpenter ants, ants and wood destroying fungi. It works by dehydrating them. It doesn't kill subterrainian termites, but those are easier to find by inspection (mud tubes). It is as advertised and, applied properly will work. I had drywood termites and ants crawling all over the structure before treating the outside with this stuff and now they are all dead, gone and discouraged. I've covered up the outside wood (siding, shingles, etc.) and so long as the cover remains intact, this stuff will continue to do its job.

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  • 25 of 30 people found this review helpful:

    4 of 5 stars  Small quantities not available
    By Laura in Moses Lake, wa on 04/23/2010
    Verified Purchase

    Product was easily mixed. Would have preferred directions for mixing smaller quantities on package. Might use BoraCare next time for effectiveness but small quantities of that were not available and it was costly.

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  • 24 of 24 people found this review helpful:

    5 of 5 stars  Timbor
    By Russ in Lawrence, KS on 03/14/2011

    Easy to use, included measuring cup, just added to water in a separate 5 gallon pail and agitated with a drill and paint mixer, pour into pump up sprayer and saturated walls of older garage. I sprayed twice waiting about 30 minutes between application, for good penetration, had it been spring or summer I might have made several wet on wet applications as the wood was old and dry. I purchased the 25 pound pail and have several more structures to treat. My (former thanks to DMOPC) pest control person said that Timbor was a great low cost addition to a complete termite treatment. I also note that Timbor is especially good at repelling carpenter ants, and fungus which I believe is the cause of dry rot. Thanks DMOPC

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  • 17 of 17 people found this review helpful:

    5 of 5 stars  Timbor
    By Cathy in Annapolis, MD on 06/15/2010
    Verified Purchase

    The Timbor powder was easy to mix and use & DoMyOwnPestControl made it simple to order.

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Most Recent Customer Reviews
  • 5 of 5 stars  Spray it urself
    By Mario in Arnold,Ca. on 03/10/2018

    I like that I can mix my chemical stronger if I want and know that I am spraying for specific insects/pests!

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  • 4 of 5 stars  Termite Trouble
    By Carl in Flagstaff, AZ on 03/10/2018

    I am using this to pre-treat new lumber that I am installing where termites had a feast. I used brown lumber where it contacts concrete, then coat new white lumber I am installing. I built a trough, mixed up a batch, then after cutting 2x4's to length I give them a 15 second dipping. Pull them out and let air dry while I cut the next one. Then after I get a stack I nail them up before the insulation and drywall goes in. I dust powder along the bottom plate.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Application easy as 1 2 3
    By Dennis in Lakeside ca on 01/26/2018

    This was really easy to use. I was not real clear how to apply and did not want to use a back pack sprayer. I rented a large power paint sprayer (the biggest one they had) from Home depot with the extended wand it went on so fast and easy. I mixed it 3 gallons at a time in a clean paint bucket. I did cover all the windows and doors this would only be a good situation in a new addition or building. Wear a approved mask and eye protection. It did create a thick fog in the rooms during application. So not good for spot application

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Timbor
    By John in Vallejo on 12/30/2017

    Ordered, performed as expected, very pleased with order, service and delivery.

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  • 2 of 5 stars  I Don't know
    By Mike in Cottontown, TN on 08/28/2017

    I can't say enough good about Do my Own Pest Control, Customer service and price can't be beat. As-far-as Timbor, I feel a bit dis-enfranchised. I paid a national pest control company a lot of money years ago, to get a "lifetime" guarantee to control my mold issue, and if it ever failed, they would re-treat it for free. Now I'm being told they will give me a pro-ration and I need to treat with a different product. Beware, this stuff may work for you, but it's not lifetime.

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Powder Post Beetles in furniture
    By Gary in Boston MA on 07/21/2017

    Have an old cabinet that had powder post beetles. Mixed up the entire bag with a bucket of water (about a gallon) and dissolved the powder then put it into a spray bottle. Sprayed entire piece and then waited. I would say it took about a week to see no more evidence of beetles. Kept vacuuming and dust lessened each time. Seems to have done the trick. Have lots leftover so will repeat if needed. This is a reasonably priced solution to save a piece of furniture.

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  • 5 of 5 stars  Tim-bor
    By Duane in Lake Jackson, Tx on 07/09/2017

    Product was delivered on time and appears to work great. True test will be how well it works over time.

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  • 1 of 2 people found this review helpful:

    1 of 5 stars  No success with Chickee Huts in Florida
    By Jose in Miami, FL on 06/19/2017

    I live in South Florida and have a chickee hut which looks like a log-framed, open-air hut with dry palm fronds covering the roof. The log frame is unpainted. The powder post beetles are in the stalks of the dry palm fronds. I followed the instructions to make the stronger 15% solution for a single application applied by brush. Four weeks later, the dust continued to show up. I did a 2nd 15% application with a spray since I still had half the bucket. Another four weeks later, I'm still getting dust and have seen for the first time the actual beetles on the outside showing full health. Apparently, it's mating season. I informed DMOPC about my huge disappointment and they escalated the matter to the manufacturer Nisus Corp. whose representative said the stalks of the dry palm fronds are not considered softwood applications for Timbor to be able to penetrate. Thus, my application may have been successful with the Bora-Care treatment. However, it's 3x more expensive thus it was never an option in the first place.

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  • 5 of 5 stars  Awesome Timbor
    By Bj in Newport Beach, CA on 03/14/2017

    Quick service -exactly what I ordered!!!

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  • 1 of 1 people found this review helpful:

    5 of 5 stars  Quick free shipping
    By Topher in TAMPA, FL on 01/03/2017

    Ordered this for a low price and was shocked it came with free shipping. Arrived quickly too!

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Most Helpful Q&A's

09/16/2009 Aj

QHow long does a Timbor treatment last? How often would a crawlspace need to be treated?

AThe manufacturer states that Timbor will last for the life of the wood as long as the wood is not exposed to rain or flooding.  It will stay in the wood forever because of how it bonds to the cells of the wood.

73 of 76 people found this answer helpful.
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02/16/2015 Charlie from North Stonington, Ct

QWhat is the different between BoraCare and Timbor? Both seem to be disodium octaborate tetrahydrate
Trying to kill powderpost beetles.


Bora-Care and Timbor are both borate products used to treat wood, but they could not be more different.  Timbor is in a powder form that is mixed with water.  It is much less expensive but it is intended more for protecting new wood only, or wood that you know does not have any issues.  Timbor will only penetrate the outer layer of the wood (about 1/4 inch) so it is more for protection or for treating fungus on the surface of the wood.

If you have an active infestation of termites, powder-post beetles or wood borers deep inside the wood then Timbor would not make it through the wood to kill these insects, up to 4 inches with one application or 8 with 2 appliations.  BoraCare is a liquid borate but has an additive, a glycol solution, which allows the product to penetrate through the entire piece of wood, therefore it should be used any time you have an active infestation because you are guaranteed it will kill anything in the wood no matter how deep it is.  Also, BoraCare will last forever in the wood so you will never have to worry about any infestations in the wood that you treat ever again.

46 of 48 people found this answer helpful.
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09/13/2010 Carol

QRecommended termite treatment(s)?
I have an 80 year old wood frame house set on piers over bare earth. I have had problems with drywood termites between the finish floor, subfloor and around the window frames. I have had the house tented twice. I would like to treat the house myself to get rid of any current activity and prevent against future activity. What products would you recommend? I have Timbor that I bought from you years ago, but I am wondering if I should plan on a more aggressive attack with another product?

ATimbor is a great product, but it does not penetrate or last as long as another product made by the same company called Bora-CareBora-Care is the best wood treatment product available because it penetrates all the way through a piece of wood where Timbor will only penetrate the outer coating.  If you have older wood then you should always use Bora-Care. Bora-Care will also stay in the wood forever, preventing any new infestations for years to come.

43 of 45 people found this answer helpful.
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12/14/2009 Mike

QCan exterior house paint be applied over Timbor-treated wood?
Will a primer paint, such as Kilz, perform normally when applied to Timbor treated wood?

AAny primer or paint can safely be applied to Timbor treated wood as long as Timbor is completely dry after treatment and dry to the touch.  There should be no issues once it is completely dried.

33 of 36 people found this answer helpful.
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10/12/2009 J.r.

QHow often would I have to replenish the surface if I used Timbor on a log home?
The surface will be stained with a Behr siding product for sealing/staining purposes.


Timbor is more typically used on wood that will not be exposed to weathering and the outside.  You would need to re-apply the Timbor each time you re-sealed the wood with the Behr product.  The same company that makes Timbor makes a product called Bora-Care.  It is more expensive, but it is a liquid solution instead of a powder.  The Bora-Care will penetrate deeper in the wood, and protect the wood indefinitely so you would not have to re apply the product ever again.   Also, Bora-Care dries clear and is easier to paint or stain over whereas the Timbor leaves a white powder on the surface and is more difficult to paint or stain.  

26 of 28 people found this answer helpful.
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Most Recent Customer Questions

02/28/2018 Robert from Lemon Grove, Ca

QDoes Tim-bor Professional treatment have a smell after it is applied?


Tim-bor Professional is odorless so would not have a smell.

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02/27/2018 Glenn from Toronto, Ontario

QIs the sanding dust, sawdust, and planing shavings from lumber treated with Tim-Bor harmful to my health?
Are there any precautions that need to be taken or personal protection equipment required when working with lumber treated with Tim-Bor regarding sanding dust, sawdust, etc.?


If you are working with wood that has been treated with Timbor, you would use the same PPE that you would need for sanding and other woodworking. Ideally, you would treat lumber with Timbor or another borate wood treatment after final cutting has been done for best protection: Timbor is absorbed about 1/4 inch into the wood where it is applied.

1 of 1 people found this answer helpful.
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02/08/2018 Br from Birmingham, Al

QIs Tim-bor safe for pregnant women to breathe after being sprayed on wood beams under house?


We recommend that anyone other than the applicator stay out of an area treated with Tim-Bor until the application is completely dry. Though Tim-Bor should not have an odor when being applied, if there is any odor then the area should be ventilated before re-entry. You can view further safety information on the SDS here.

1 of 1 people found this answer helpful.
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01/09/2018 Jen from Houston, Tx

QCould a dye be a potential problem for a Tim-bor solution since the product specs have no mention of adding dye?
We are building & the company builder recommended to treat all of the interior wood is adding a blue dye to the Timbor solution. Company's reason is to insure that all the wood has been sprayed so the dye helps to visibly see the areas that's been treated.


It is fine and very common to add a spray indicator dye to Tim-bor or similar wood treatment products before spraying. This helps to keep track of what wood has been treated, and it does not interefere with the efficacy of the Tim-bor. Keep in mind that the spray indicator will not fade on the wood: it will be visible permanently.

1 of 1 people found this answer helpful.
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11/13/2017 Granny from Austin, Texas

QCan Bora-Care or Tim-bor be rolled on?


Yes, you can apply a solution of either Boracare or Timbor using a sprayer, brush, or roller. Keep in mind that Timbor will not dry completely smooth and clear, so if you are treating wood that is decorative or that will be finished with a stain or paint, then we recommend using Boracare for those applications.

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10/22/2017 Kenneth from Wilburn, Ar

QIs Timbor effective when applied in soil near footings and under buildings?


Timbor is a wood treatment product only and would not be effective at all in soil. If you want to treat soil to protect against wood destroying insects like termites you would need to use something like Taurus SC in a trench application.  We have a guide on how to use it here.

1 of 1 people found this answer helpful.
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08/17/2017 Sbm

QCan I use Timbor on concrete by drilling/injecting method around the perimeter of a masonry building?


No, Timbor is only used directly on wood.

It is recommended that you use something like Termidor SC or Taurus SC to inject into the ground.  This product will last for up to 10 years in the soil once applied. Please check out our Termite Guide for tips on how to treat and prevent termites in the future.

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08/02/2017 Iram from Mclean

QIs Timbor available in gel form?


Timbor itself is not avaialble in gel but Jecta contains the same active ingredient and is a gel. 

1 of 1 people found this answer helpful.
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07/21/2017 Becky from Lex, Nc

QWill spraying bleach on top of Timbor on floor joists for mold negate Timbor's effect on mold?
Spraying where mold returned or was missed


Timbor does not treat or prevent for mold control. Spraying bleach on top of your application will likely pull or break down some of the particles which likely needs to be done so that you can put a true mold control product like Boracare with Mold Care on your wood to treat it. Also keep in mind, even with the use of proper mold control products to treat wood, if you have mold coming back that is because you have not fixed your moisture problem that is causing it to occur in the first place. You likely want to look at getting a dehumidifier for under your home and in your crawl space or put down a vapor barrier in those areas to cut down on excess moisture accumulating. 

1 of 1 people found this answer helpful.
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07/18/2017 Thomas from Ruskin, Fl

QCan Timbor be mixed with ethylene glycol to help it penetrate into the wood? This would be less expensive than using Boracare.


Timbor will only penetrate 1/4 inch into the wood since it is a powder.  It should only be mixed with water as directed on the product label.  If you do mix it with other products, it will clump and not work the way you would like it to.  If you need better penetration, Boracare is the only way to do so.

1 of 4 people found this answer helpful.
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