At the heart of Board Defense is Disodium Octaborate Tetrahydrate, a proven borate compound that has been used for safe and effective pest control for more than 40 years. Unlike synthetic chemicals, borates do not break down over time, ensuring continuous protection long after application. This makes Board Defense a reliable, eco-friendly solution for both indoor and outdoor wood treatments.

When mixed into a solution, Board Defense leverages the natural moisture in wood to draw the active ingredient deep into its fibers. Over time, the borate continues to penetrate, providing enduring defense against wood-destroying insects, rot, and fungi. The result is a durable layer of protection that keeps your wood strong and structurally sound.

Key Features:

• Environmentally Friendly: Contains no VOCs or hazardous solvents—safe for people, pets, and the planet.
• Odor-Free and Easy to Apply: Apply as a dust or water solution with zero mess or fumes.
• Versatile Applications: Perfect for framing, flooring, log homes, decks, siding, and other wood structures.
• Added Layer of Protection: Dusting checks and small crevices provides enhanced protection against wood-destroying insects and fungi.
• Fungal and Rot Prevention: Acts immediately upon contact to stop fungi and wood rot, preserving the natural strength and integrity of your wood.

Recommended Application Methods

Brush
Garden pump sprayer

Surface Preparation

Only use on bare wood
Surface must be clean and dry
Mildew and mold free
Do not use steel wool or wire brush, Osborn brush recommended
Do not use products containing chlorine bleach

Application Temperature

40° to 90°F

Special Instructions

Only use on bare wood
Back-brushing required for optimal results
Agitate product every 15 minutes
Maintain a "wet edge" to avoid lap marks
Avoid applying product in direct sunlight

Dry Time

Dry for second application after 4 - 24 hours
Complete cure time may take 48 hours or more depending on humidity and temperature.

Mixture Rate

1 pound of Baord Defense to 1 gallon of water

Coverage Rate

~150 square feet per mixed gallon