Preventative Borate Wood Treatment

ChemicalLicense Required
Effectiveness:
Cost Level
Medium
Environmental Impact
Low
Resistance Risk
Low
Target Pests
6 species

Target Pests (5)

Common NameScientific NameCategory
Subterranean TermiteReticulitermes flavipesTermites
Drywood TermiteIncisitermes minorTermites
Carpenter AntCamponotus spp.Ants
Powderpost BeetleLyctidaeWood-Boring Pests
Old House BorerHylotrupes bajulusWood-Boring Pests

Application Method

Apply borate solution or foam to wood during construction for long-term protection against wood-destroying organisms. Spray, brush, or inject borate (disodium octaborate tetrahydrate - DOT or Tim-bor) into wood framing, sill plates, rim joists, and other structural members before installation of insulation and drywall. Borates penetrate wood and provide residual protection by making wood unpalatable and toxic to wood-destroying organisms. Most effective on new exposed wood before enclosure. Can also be applied to existing structures via foam injection into wall voids or during renovation when framing exposed. Provides permanent protection in interior protected locations. Best used as preventative measure in high termite pressure areas.

Timing

Apply during new construction after framing erected but before insulation and drywall. Best applied to dry wood for maximum penetration.

Frequency

One-time application provides permanent protection in protected interior locations. No reapplication needed unless wood gets wet and borates leach out.

Preparation Required

Coordinate with builder for access during construction. Calculate wood surface area to determine product needs. Mix borate to proper concentration. Have spray equipment ready.

Follow-up Required

Document all treated areas. Provide builder/customer with treatment certification. Explain borate protection limited to treated wood in interior locations. Recommend soil treatment or baiting system for comprehensive termite protection.

Safety Precautions

  • Requires licensed pest management professional
  • Wear appropriate PPE during mixing and application
  • Only effective in protected interior locations - not for exterior wood
  • Borates can leach from wood if exposed to water
  • Follow label rates for dilution
Important Disclaimer: The information provided in this knowledge base is for educational and reference purposes only. Pest management professionals should always consult current product labels, Safety Data Sheets (SDS), manufacturer instructions, and applicable local, state, and federal regulations as the definitive source of truth. Product formulations, application methods, safety requirements, and regulations may change over time. This information may be out of date and should not replace professional judgment, proper training, or required licensing and certifications.