# Pyrethroid pesticide, liquid, flammable, toxic, flashpoint less than 23° C · USPS · II, III — Mailing and air-carriage restrictions by item category

For Pyrethroid pesticide, liquid, flammable, toxic, flashpoint less than 23° C · USPS · II, III, item category is Pyrethroid pesticide, liquid, flammable, toxic, flashpoint less than 23° C; carrier is USPS; dot packing group is II, III; restriction type is restricted; scope is domestic mail (air and surface), recorded from its source on 2026-08-29; source re-checked 2026-09-08.

- **Item category:** Pyrethroid pesticide, liquid, flammable, toxic, flashpoint less than 23° C _(verified: appears in the quote below)_
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **DOT packing group:** II, III _(verified: appears in the quote below)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** domestic mail (air and surface) _(our reading, not quoted from the source)_
- **Conditions:** Hazard class 6.1, UN3351, packing group II, III; domestic mail air: 6A; domestic mail surface: 6A

## What the source says

> Pyrethroid pesticide, liquid, flammable, toxic, flashpoint less than 23° C 6.1 UN3351 II, III 6A 6A

## Source

- https://pe.usps.com/cpim/ftp/pubs/pub52/pub52.pdf

Last verified: 2026-09-08. Review by: 2027-09-08.
Part of [Mailing and air-carriage restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).