Yes the USPO has learned that people have been using their strong Tyvek envelopes inside out. So now they print their name on both sides of all their packaging so they can only be used as a USPO box. I have seen people cut down their free boxes so that no logo shows. Still this is risky and I think a fine-able offense. There are enough free cartons out there. Just check liquor stores, paint stores, grocery stores to name a few for good strong cartons. Turn them inside out and voila! New box for you!
Rick, a hair dryer would work like an iron.
