# Thermal Insecticidal Fogging: Building Code Definition > How the IFC 2009 define thermal insecticidal fogging, where the wording differs, and which chapters depend on the term. - Canonical: https://harth.build/resources/glossary/thermal-insecticidal-fogging/ - Last updated: 2026-09-07 - Data source: Definitions quoted from the 2009 International Codes as transcribed in this site's building-codes collection, with the source chapter linked for each quotation. Usage counts are computed over the chapters hosted here, one copy per code. The [ICC code library](https://codes.iccsafe.org/codes) publishes the current model text and the [ICC adoption maps](https://www.iccsafe.org/advocacy/code-adoption-maps/) show which edition a jurisdiction has adopted; those sources control. ## Key facts | Fact | Value | | --- | --- | | Defined in | IFC 2009 (2009 editions transcribed in this corpus) | | Primary source | IFC 2009 Fumigation and Thermal Insecticidal Fogging (model text, not a jurisdiction's adopted text) | | Chapters using the term | 3 (counted across the codes hosted here) | | Wording identical across codes | Single code (compare before citing one code's wording under another) | ## Direct answer Thermal insecticidal fogging is a defined term in the International Fire Code (IFC) 2009, in Fumigation and Thermal Insecticidal Fogging. The code's own words are: “The utilization of insecticidal liquids passed through thermal fog-generating units where, by means of heat, pressure and turbulence, such liquids are transformed and discharged in the form of fog or mist blown into an area to be treated.” No other I-Code in this corpus defines it, so the IFC 2009 definition is the one to work from. The term is used in 3 chapters of this corpus, most often in Fumigation and Thermal Insecticidal Fogging (IFC 2009), Scope and Administration (IFC 2009), Definitions (IFC 2009). These pages transcribe the 2009 model text; verify the definition against the edition and amendments your authority having jurisdiction has adopted. *Content and cited inputs reviewed by [Scott Barrington](https://nz.linkedin.com/in/barrington), Harth founder and architectural technology specialist · Published 2026-09-07 · Updated 2026-09-07.* ## What does this term mean? **Thermal Insecticidal Fogging** — IFC 2009, Fumigation and Thermal Insecticidal Fogging: > The utilization of insecticidal liquids passed through thermal fog-generating units where, by means of heat, pressure and turbulence, such liquids are transformed and discharged in the form of fog or mist blown into an area to be treated. ![Labeled code-term definition diagram: Thermal Insecticidal Fogging: Building Code Definition](https://efwwel0vyt9vy5so.public.blob.vercel-storage.com/images/glossary/thermal-insecticidal-fogging/diagram-1344.webp) *How the IFC 2009 define thermal insecticidal fogging, where the wording differs, and which chapters depend on the term.* ## What must be verified before using this guidance? **Thermal Insecticidal Fogging** is defined once in this corpus, in the [Fumigation and Thermal Insecticidal Fogging](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/fumigation-and-thermal-insecticidal-fogging.md) chapter of the International Fire Code (IFC) 2009: > The utilization of insecticidal liquids passed through thermal fog-generating units where, by means of heat, pressure and turbulence, such liquids are transformed and discharged in the form of fog or mist blown into an area to be treated. ## Where thermal insecticidal fogging is used in the code The term appears in 3 chapters of the 2009 I-Codes hosted here. The chapters that lean on it hardest are the ones to read next. | Chapter | Code | Mentions | | --- | --- | --- | | [Fumigation and Thermal Insecticidal Fogging](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/fumigation-and-thermal-insecticidal-fogging.md) | IFC 2009 | 15 | | [Scope and Administration](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/scope-and-administration.md) | IFC 2009 | 4 | | [Definitions](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/definitions.md) | IFC 2009 | 1 | ### The term in use How the code actually writes about thermal insecticidal fogging, quoted from the 2009 text hosted here: > Fumigation and thermal insecticidal fogging operations within structures shall comply with this chapter. — [IFC 2009 §1701.1](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/fumigation-and-thermal-insecticidal-fogging.md) > An operational permit is required to operate a business of fumigation or thermal insecticidal fogging and to maintain a room, vault or chamber in which a toxic or flammable fumigant is used. — [IFC 2009 §105.6.19](https://harth.build/resources/building-codes/us-states/rhode-island/ifc-2009/scope-and-administration.md) ## Thermal Insecticidal Fogging: what to open, and in what order Every row is a document this term depends on. The [ICC code library](https://codes.iccsafe.org/codes) and the [ICC adoption maps](https://www.iccsafe.org/advocacy/code-adoption-maps/) cover the middle rows. | Check | Where | Confirmed | | --- | --- | --- | | Read the definition in the adopted IFC | Fumigation and Thermal Insecticidal Fogging | | | Re-check the requirement that uses it | Fumigation and Thermal Insecticidal Fogging (IFC 2009) | | | Re-check the requirement that uses it | Scope and Administration (IFC 2009) | | | Re-check the requirement that uses it | Definitions (IFC 2009) | | | Local amendment to any of the above | Jurisdiction's amendment list | | **A research aid, not a code determination.** The authority having jurisdiction decides which edition and which amendments apply. ## Where can you explore related guidance? - [Explore all glossary guidance](https://harth.build/resources/glossary.md) - [Fumigant: Building Code Definition](https://harth.build/resources/glossary/fumigant.md) - [Hood: Building Code Definition](https://harth.build/resources/glossary/hood.md) - [Fire Code Official: Building Code Definition](https://harth.build/resources/glossary/fire-code-official.md) - [Agent: Building Code Definition](https://harth.build/resources/glossary/agent.md) ## Sources and method Definitions quoted from the 2009 International Codes as transcribed in this site's building-codes collection, with the source chapter linked for each quotation. Usage counts are computed over the chapters hosted here, one copy per code. The [ICC code library](https://codes.iccsafe.org/codes) publishes the current model text and the [ICC adoption maps](https://www.iccsafe.org/advocacy/code-adoption-maps/) show which edition a jurisdiction has adopted; those sources control. ### Source links - [codes.iccsafe.org](https://codes.iccsafe.org/codes) - [iccsafe.org](https://www.iccsafe.org/advocacy/code-adoption-maps/) ## Frequently asked questions ### What is the code definition of thermal insecticidal fogging? The International Fire Code (IFC) 2009 defines it in Fumigation and Thermal Insecticidal Fogging as: “The utilization of insecticidal liquids passed through thermal fog-generating units where, by means of heat, pressure and turbulence, such liquids are transformed and discharged in the form of fog or mist blown into an area to be treated.” The 2009 model text is reproduced here; the definition that binds your project is the one in the edition your jurisdiction has adopted, as amended locally. ### Which parts of the code depend on thermal insecticidal fogging? In this corpus the term is used across 3 chapters, led by Fumigation and Thermal Insecticidal Fogging in the IFC 2009. Those are the sections whose scope moves if the definition is amended locally, so read them together with Chapter 2 rather than on their own. --- - Continue in Harth (open this topic in the Harth agent): https://app.harth.build/agent?context=%2Fresources%2Fglossary%2Fthermal-insecticidal-fogging%2F - View this page in a browser: https://harth.build/resources/glossary/thermal-insecticidal-fogging/ - All resources for agents: https://harth.build/llms.txt