If you want to really improve your chances of avoiding canine detection you should give up on the triple vac seal and use a non permeable 3M heat sealed bag as the final layer, only one vac seal is needed then. Vac sealing even three times permeates in a few days, there are some good threads on the main forums re tests done with a real drug dog etc you should have a read of, you get that aspect of your packaging right and then there will be no issues shipping intentionally. If your blow really is that nice I'd like to try some in AU. Just a suggestion anyway...