QuoteYou say it's a "non-issue", but it's likely one of the biggest reasons for interception. Sure, everyone should be using MBB and washing down the outside of the bag in a clean environment then bagging again in another MBB, but it's still possible for traces to end up outside and that's enough to set off a dog's nose/particle detector.On the one hand you could have a point, it's entirely possible a lot of the vendors who use MBBs are smearing residue all over the place thus making the dogs alert the package(s). On the other hand, I've heard enough from local sources here in Sweden how a lot of packages are getting intercepted and a vendor like for example atlas2012 ( http://silkroadvb5piz3r.onion/silkroad/user/24c0f11198 ) who has a track record of shipping to over 18 countries specifically singles out only Sweden and Norway in Europe as being the only problematic countries.QuoteAlso, I'm not convinced that such a shipping test reveals much: suppose LE open the package; they will discover it's legit, but almost certainly see it for what it is (a dry run) and thus carefully reseal and forward in such a manner that their interception is undetectable. They will then add the package's profile to their database and be sure to carefully inspect any followup in the future. So, you're none the wiser and end up sending the goods anyway: may as well just have sent them in the first place.While I highly doubt LE would be capable of doing this at all, I will take this into consideration and very specifically mark the packages and use materials which makes it impossible for them to re-seal it without it being evident (for example using an intricate symbol printed on a label set on the opening of a security bag). As for a potential database all it could really contain is the shape of the envelope/parcel, weight and any reoccurring features like for example identical return address or a identical label in terms of size and font/size used on it. I'm not disputing LE is capable of keeping a log as that's been proven recently ( http://www.thesmokinggun.com/documents/woman-arrested-for-obama-bloomberg-ricin-letters-687435 ), but to take that idea and evolve it to have every customs employee verify each and every envelope/parcel coming into any country is a bit much to believe.