---
kind: "unit"
title: "40"
title_heading: "Protection of Environment"
key: "chI/subchE/part166"
level: "part"
label: "Part 166"
heading: "Exemption of Federal and State Agencies for Use of Pesticides under Emergency Conditions"
release: "ecfr-current"
date: "2026-08-27"
url: "https://uscodex.org/cfr/40/chI-subchE-part166"
sections_count: 20
---

# Part 166 — Exemption of Federal and State Agencies for Use of Pesticides under Emergency Conditions

Title 40 C.F.R. — Protection of Environment › Chapter I — Environmental Protection Agency › Subchapter E — Pesticide Programs

## Contents

- [Subpart A — General Provisions](/cfr/40/chI-subchE-part166-subpartA.md)
- [Subpart B — Specific, Quarantine, and Public Health Exemptions](/cfr/40/chI-subchE-part166-subpartB.md)
- [Subpart C — Crisis Exemptions](/cfr/40/chI-subchE-part166-subpartC.md)