> the method for reliably fooling a good sniffer dog has yet to be devised It is indeed surprisingly hard to make an airtight container. A ziploc bag doesn't w

> the method for reliably fooling a good sniffer dog has yet to be devised It is indeed surprisingly hard to make an airtight container. A ziploc bag doesn't work. Even setting your drugs in a block of concrete does not work. What does work is enclosing that block with a layer of melted lead and letting that cool down. Of course that might be suspicious in other ways (and expensive).