Timbor Insecticide, Fungicide and Wood Preservative

Timbor Insecticide, Fungicide and Wood Preservative


CODE: DT12554

List price: $49.99  


You save: $21.22 (42%)
bag(s) (1.5 lb. each) bucket(s) (25 lb. each)
10 days
1439 points
53 points

Timbor should only be applied for eradicating fungus off of wood and for protecting new wood from future infestation.  If you are 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.  

Timbor is an insecticide, fungicide and wood preservative for the protection and treatment of lumber against fungal decay and wood destroying insects. Timbor 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. Timbor does not treat mold or prevent mold from growing.

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 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



Active Ingredient: Disodium Octaborate Tetrahydrate
Target pests: Wood destroying organisms including: Termites, Beetles, Carpenter Ants
For use in: Interior and exterior as an insecticide, fungicide, or wood preservative. Use on untreated wood. 25# Timbor includes a scoop for easy measuring
Application: Can be used as a foam, liquid, or dust. If you already have a powderpost beetle infestion, BoraCare is the preferred product, especially for furniture, because it absorbs further into the wood to take care of the infestation. Timbor only absorbs 1/4 of an inch.
Yield: 1.5 pounds of Timbor will treat up to 200 sq. ft of untreated wood. Use as a dust against several insects. Refer to product label for complete details and instructions.
Manufactured By: Nisus (UPC: 616609111537)



Very simple to use, mix with water... I like the fact that I can mix a gallon at a time and spray it around easily. Seems to be doing the job so far. I've ordered this on three occasions now from Drywall Tools plus, for a new construction coverage.


Quick delivery. Good instructions. Product does not prevent later absorbing of penetrating epoxy resin used to strengthen the wood.


Kills ants and helps preserve wood. Wish I hadn't had to use this in the first place but glad I went with this instead of store bought crap to make sure it was done right


I've sprayed once a bench which was being eaten by wood eating creatures of some sort !! Have seen none since I sprayed. Was recommended by my Pest Company. works great !!


This is the stuff the pros use. The real deal. It can spot treat termite infestations, or be used to pretreat wood prior to installation. I was very happy to find it available online.


Seems to have worked and easy application. I used this product on an ash furniture piece that had a couple suspicious spots (possible powder post beetle holes), so I treated it for peace of mind. A couple things I noticed: it seem to effect wood glue like instantly drawing the moisture out before it can penetrate the wood:/ so maybe assembly piece before treating. The second thing is that it didn't seem to effect the finish (polyacrlic) what so ever, luckily:) Also had no noticable fumes or stong odors so it was pleasant to work with. All and all seemed to be a good product probably intended for out door structures and not so much funiture.




great product,great price and I love the fast and free shipping


Arrived on time and seems to work fine


Easy to use and does the job. This is my second order. Clovis Tools has been fast in fulfillment and delivery of my orders.

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