When shipping anything unusual (or conducting any uncommon business) with the USPS, it is best to print a copy of the applicable regs and take it with you. And never send a courier to do the job for you -- you are just setting him (her) up for an unfair confrontation with an idiot (the postal employee).
It is unethical to engage in a battle of wits with someone who is obviously unarmed.
It is unethical to engage in a battle of wits with someone who is obviously unarmed.
