Trifluralin Root Barrier Safety for Humans and Pets

Considering Biobarrier (trifluralin-impregnated fabric) for in-ground root control. Questions on human/pet hazard and disclosure requirements.

How It Works

Trifluralin (dinitroaniline) inhibits root tip cell division by preventing chromosomal spindle formation. Contact/vapor action only—no systemic uptake into plant. Effective zone: ≤10 cm from barrier.

Safety Profile

• EPA Class IV: "Practically nontoxic" (oral LD50 >10,000 mg/kg rats).
• Less toxic than salt; slightly more than sugar.
• Extremely low water solubility (0.3 ppm)—no leaching.
• Binds tightly to soil; degrades in ≤6 months.
• 30+ years crop use between rows—extensive safety data.
• No food chain accumulation.

Practical Notes

• Wear plastic gloves during installation (stains hands).
• Keep out of waterways.
• Follow label instructions.
• Disclosure laws vary—check local real estate regulations.