---
type: restriction
id: usps-pool-shock-chlorine-tabs
asset: shipping-restrictions-by-class
title: "Pool shock / chlorine tabs — Postal shipping restrictions by item category"
sources:
  - https://selleressentials.com/usps-hazmat-noncompliance-fee-2026/
source_quote: "Pool shock / chlorine tabs | Oxidizer | UN1748"
generated: true
harvested: 2026-08-04
stale_after: 2027-08-04
item_category: "Pool shock / chlorine tabs"
carrier: "USPS"
restriction_type: "restricted"
scope: "domestic US"
conditions: "Classified as oxidizer. Requires hazmat declaration. $50 noncompliance fee if undeclared, effective July 12, 2026."
verified: true
unverified_fields: carrier, conditions, restriction_type, scope
---
**Item category:** Pool shock / chlorine tabs

**Carrier:** USPS

**Restriction type:** restricted

**Scope:** domestic US

**Conditions:** Classified as oxidizer. Requires hazmat declaration. $50 noncompliance fee if undeclared, effective July 12, 2026.

> Pool shock / chlorine tabs | Oxidizer | UN1748

Source: <https://selleressentials.com/usps-hazmat-noncompliance-fee-2026/>