Drain Cleaner
Liquid drain cleaner is completely banned from both carry-on and checked baggage, regardless of container size.
Carry-on
Not allowed
Checked
Not allowed
Carry-on details
Not allowed. Liquid drain cleaner is a caustic, corrosive chemical and is banned from carry-on entirely — the standard 3.4 oz liquids exception does not apply, since this is a full hazmat prohibition, not a size restriction.
Checked-bag details
Not allowed. Drain cleaner is also banned from checked baggage, in any container size, because of its corrosive properties.
Special instructions
Buy drain cleaner or plumbing supplies at your destination instead.
FAQ
- Can I pack a small travel container of drain cleaner?
- No. Drain cleaner is banned from both carry-on and checked baggage regardless of container size because of its corrosive classification.
Related items
Source: TSA — What Can I Bring? · Last verified: 2026-08-02
Final decision rests with the security officer at the checkpoint.