Even if they did, won’t they get a lot of false positives because of a large amount of it being sprayed hemp buds that are legal as hemp? Also, I know a lot of dispensaries get their stock like vape pens and such delivered this way already. How does that all work?
Why would you mark your weed media mail? Mine shows up as regular first class mail. Never had an issue. It’s legal in most of the US.
Save money on postage. Media Mail is cheaper than First Class/Ground Advantage or Priority Mail and still offers tracking.