I know the printed label says this, and I practice it, but when I asked my mail carrier, said it isn't an issue.The USPS does not want you to tape over the UPC Codes.
No no I mean the UPC bar codes on your mailing label.Bad Habit not taping over USPS upc codes, just grab a new box from the shelf when you go into the post office for them to scan. If you don't use 2" fiberglass tape, then about 4 complete layers of the thin clear tape will be adequate, minimum. Putting the bullets in tyvec bags from the post office, then put this package in the flat rate box, well packed is added bonus insurance.
Tape, tape, tape.pound of it was tape.
No no I mean the UPC bar codes on your mailing label.