Spot on....And thats why they are doing it It's got fuck all to do with folks carrying anything, its about fucking with the way some people choose to live. Drugs can be detected more efficiently by trained dogs turning up at random, which is why they are deployed in situations that actually matter like an airport whenever there is a suspicion some maniac has determined to explode something. This has added benefit of being able to find the stash where ever it is in the club/pub, toilet cisterns,er,dealers house behind tiles or down the side of the seat cushion ect. Might even find a terrorist with a 9bar of semtex and a gun.... BONUS ! Nope but we got two kids royally fucked over for a couple of disco biscuits, criminalised and we are told it was a success.