No one would induce you to consider committing a crime that involves shipping possibly flammable substances via official government transport.
As a safety concern, I'd suggest screwing the caps down tight, sealing the bottles with a good wrap of tape, and placing them in multiple ziplock type bags. That way if you do accidentally ship an alcohol based product it won't leak beyond the multiple layers of securing protection and cause a a hazardous situation.
I'm not a lawyer, so here's some official info culled from the USPS website (
HERE),
343.27 Authorization to Mail Ethanol-Based Flammable Liquids or Solids
Subsection B
For content containing
not more than 70% ethyl alcohol by volume, tender only parcels weighing 25 pounds or less. Each
non-glass primary receptacle must not exceed 16 ounces of flammable liquid or 1 pound of solids. Each
glass primary receptacle must not exceed 8 ounces of flammable liquid or 1/2 pound of solids. Total volume of flammable material per mailpiece must not exceed 96 ounces for flammable liquids or 16 pounds for flammable solids.
Subsection D
Enter parcels using Priority Mail Express, Priority Mail, First-Class Mail, or First-Class Package Service.
Click to expand...