# Division 6.1 toxic substances qualifying as Limited Quantity/consumer commodity — Postal shipping restrictions by item category

For Division 6.1 toxic substances qualifying as Limited Quantity/consumer commodity, carrier is USPS; restriction type is restricted; scope is domestic mail via air or surface transportation; conditions is Permitted when packaged under applicable requirements per Packaging Instruction 6A, recorded from its source on 2026-08-04.

- **Item category:** Division 6.1 toxic substances qualifying as Limited Quantity/consumer commodity
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** restricted _(our reading, not quoted from the source)_
- **Scope:** domestic mail via air or surface transportation _(our reading, not quoted from the source)_
- **Conditions:** Permitted when packaged under applicable requirements per Packaging Instruction 6A _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Domestic Mail via Air or Surface Transportation: Division 6.1 toxic substance or poison that can qualify as a Limited Quantity/consumer commodity material is permitted when packaged under the applicable requirements in

## Source

- https://pe.usps.com/text/pub52/pub52c3_025.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).