Excellent post TheYowie, I must find that drug dog thread again and bump it some more too. The non permeable layer is the missing piece of the puzzle in most cases with a zero MTVR rating, that and careful preparation in a clean environment at each stage. It is however a lot to ask a vendor shipping 100's or in some cases 1000's of orders a month to do but I for one would be happy to pay an extra premium for this level of service to help ensure my order arrives. Standard envelope mail is not x-rayed unless singled out, there is simply just too much of it so these precautions would virtually eliminate canine detection. I really hope vendors take notice of this, they will not simply change without incentive though. +1