Sending raw feces through the postal service is a federal offense, and in today's political/social climate, could be considered a terroristic act,
Human fecal samples are sent through the mail for medical
testing all the time, albeit properly packaged and marked.
I have received these "Occult Stool Sample" collection kits
with a return mailer from my Health Care Provider for years.
is a blood-in-stool test)
It MIGHT be a violation of 18 USC § 1716
- Injurious articles as nonmailable
But I haven't waded through the boilerplate. Have at it.
Mailing somebody a turd could be
construed as "terrorist threat",
harassment, or stalking.......IF it puts the recipient in a "state
of fear of bodily injury".