Originally Posted by
orbitmic
I systematically have my bags opened when I have put full size bottles of liquids in them. Since of course you can't take them in hand luggage either that is an annoying consequence. TSA has broken/lost a good 20 TSA approved padlocks in the process too...
I went 6 months without having my bad checked, and then started traveling with a bottle of pepto bismal greater than 3oz and started getting bag checks consistently.
I'd say the size of the shampoo bottles would be a determining factor.