Tim-Bor Professional Insecticide

Tim-Bor Professional Insecticide (also spelled TimBor), manufactured by Nisus, is a wettable powder that can be applied to various types of wooden surfaces and acts as a barrier to prevent damage caused by insects and fungus. The product contains the active ingredient disodium octaborate tetrahydrate (DOT), a natural mineral salt that can be applied as dust, foam, or liquid spray.

This easy-to-use product is similar to another wood preservative, Bora-Care. However, Tim-Bor creates a surface barrier to wood for effective pest prevention. Unlike Bora-Care, it does not penetrate wood to treat already infested wood.

Tim-Bor Professional Insecticide provides a residual effect that lasts numerous years to control termites and mold from damaging porches, fences, and more. This cost-efficient product offers little to no threat due to its low toxicity rate and is almost odorless.

Tools Needed

A backpack sprayer or handheld pump sprayer is needed. A 5-gallon bucket, drill, and paddle drill bit are also needed to mix this product thoroughly. A bulb or electric duster is required when applying Tim-Bor Insecticide as a powder.

How to Use

• Step 1: Determine how much Tim-Bor Professional Insecticide you will need for your application by measuring the square footage of the area being treated. To do this, measure the length and width of the treatment area in feet, then multiply them together (length x width = square footage). The application rate varies depending on the type of treatment method you use. For general liquid spray applications, Tim-Bor can be mixed in a 10% or 15% solution at a rate of 1.0 lb or 1.5 lb. per gallon to cover 1,000 sq. ft of wood surface area. For remedial or preventative treatments, use 5 gallons of liquid solution per 1,000 sq. feet of area. For Foam applications, the 15% 1.5 lb. rate per gallon with an additional foaming agent at a rate of 1 to 2 oz. per gallon to your foam sprayer. Dust applications can be applied at a rate of 0.5 oz. per square foot.
• Step 2: For liquid applications, add 80% of the required amount of water to the sprayer tank or bucket, and then, while stirring the water, slowly add the correct amount of Tim-Bor into the bucket (based on your calculations). For general use, we recommend adding 1 pound of Tim-Bor to 1 gallon of water. Add the rest of the water to the bucket and continue to use the drill and paddle bit to stir the solution until it has completely dissolved. Pour the mixed solution into the spray tank and begin applying Tim-Bor to wooden surfaces. For dust applications, add the Tim-Bor powder to a duster and close the top.
• Step 3: Apply Tim-Bor liquid spray applications on wood structures such as decks, fences, steps, sheds, and other infested areas. The application may also be made by drilling and injecting the solution into the infested wood. As a foam, inject the Tim-Bor in wall voids or insect galleries. As a dust application, apply the dust into wall voids such as between studs, block voids, eaves, attics, soffits, etc.

Where to Use

Tim-Bor Professional Insecticide can be applied to indoor and outdoor areas on unfinished and unpainted wooden surfaces only. It is ideal for use on fences, porches, posts, lumber for construction, building structure frames, wooden storage sheds, and other wooden structures that are infested. When dusting, apply it to wall voids and other areas where insects have created galleries. 

When to Use

It is ideal for construction professionals, homeowners, and pest control agents. It is most effective when applied before water or insect damage occurs and beneficial to use during construction so that the studs in the walls can be treated. It works best on wood with at least 15% moisture.

Safety Information

Tim-Bor Professional Insecticide is safe to use around children and pets when applied according to the product label instructions. Always wear the proper personal protective equipment (PPE) when mixing or applying this product.

Keep children and pets away from treated areas until the spray has dried. 

Special Considerations

The manufacturer states that Tim-bor Profesional Insecticide 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.

This product will not work on painted or stained wooden surfaces. It must be applied to bare wood. It must be to bare wood, such as dust or foam, and applied to cracks, crevices, or wall voids where wood-damaging insects hide. Read the label for further information on using Tim-Bor Insecticide as a powder or foam.