Take this with a grain of salt and not proof but I ran my own experiment this month. Let's start this off by do not do this at home. I have been doing this a long time and 99% confident in my OPSEC. You always need to leave some room for error.
Ok so I ordered a pack from a certain vendor on AB I won't name cause I am not a dick and It got taken by customs. It seems these retards could't get one pack through to the USA from NL. It was 50 bucks so I let it FE and didn't really care it never came. I realized a week or two later this would be perfect experiment.
I ordered a pack from /u/undergrounddrugroad who ships from China to the same address and same name to see if it could get through. To make a long story short my drugs are in hand and I'm getting high tonight.. This shouldn't be done and be careful out there but it worked for me.
PSA: This drop has 0 attachments to me. Don't be as stupid as me. This was just a test.
God this is like an alcoholic saying it's okay to drive drunk because they've never crashed before.