Natural Termite Treatment Methods
An overview of non-toxic and reduced-chemical termite treatment approaches — sourced from EPA, USDA, and university extension research. Informational only — active infestations require a licensed pest management professional.
How Does Heat Treatment Eliminate Termites?
Whole-structure or localised heat treatment raises the temperature of wood to above 49°C (120°F) for a period sufficient to kill all life stages of termites, including eggs. Specialised heating equipment is introduced into the structure and temperatures are monitored at multiple locations to confirm uniform heat penetration. Heat treatment leaves no chemical residue and can treat an entire structure in a single treatment. The UC IPM programme documents heat as an effective non-chemical treatment specifically for drywood termites. A licensed pest management professional must conduct whole-structure heat treatments.
What Are Borate Wood Treatments and How Do They Work?
Borate-based products (including disodium octaborate tetrahydrate, sold as TimBor or BoraCare) are applied to wood surfaces or injected into infested wood. Borates diffuse through wood and kill termites and other wood-destroying insects that ingest the treated material. Borates are derived from borax, a naturally occurring mineral, and have low mammalian toxicity. The USDA Forest Service recognises borates as low-toxicity wood preservatives. BoraCare, which uses a glycol carrier, penetrates deeper into dense wood than water-based products like TimBor. Application to existing structures typically requires a licensed applicator.
Can Beneficial Nematodes Control Termites?
Entomopathogenic nematodes — microscopic roundworms that parasitise soil insects — have been investigated as a biological control option for subterranean termites. Species such as Steinernema carpocapsae and Heterorhabditis bacteriophora can infect and kill termite workers in laboratory and field trials. However, field efficacy is variable and depends on soil moisture, temperature, and distribution method. Nematodes are not an established primary treatment for active infestations — see UF/IFAS Extension for current research. Always consult a licensed professional for active infestations.
What Role Does Diatomaceous Earth Play in Termite Management?
Diatomaceous earth (DE) is a powder made from the fossilised remains of diatoms. It damages the cuticle of insects, causing dehydration. DE is most effective against soft-bodied insects in enclosed, dry environments. While DE can kill individual termites it contacts, it is not an established primary treatment for termite infestations because subterranean termites live in soil and mud tubes, where moisture neutralises DE's desiccating action. DE is occasionally used as a supplementary barrier measure. The EPA classifies food-grade DE as a biopesticide with a low-risk profile when used as directed on product labels.
Disclaimer
This page is an independent informational resource. Content cites EPA, USDA, and university extension programmes as primary sources. Informational only — active termite infestations require a licensed pest management professional. Last updated 2026-06-26.