Originally Posted by
WorldLux
Most airports have some sort of desk just behind the transit immigration where there's either a customs officer waiting or where you can call them. In some cases, you exit immigration with arriving passenger and go through either the green or red channel (usually at smaller airports with no proper transit immigration).
How the respective airports and authorities handle controls is irrelevant as you have the duty to declare goods that need to be declared. Failure to do so may result in fines. Ignoring the rules or implying that these rules aren't enforced is thus extremely bad advice.
It's extremely good advice to inform people how matters work in practice. And that includes providing knowledge of frequency/infrequency of approach.
I'm at intra-EU border crossings dozens of times each month and most people don't know about (let alone have a problem with) the intra-EU/intra-Schengen customs control issues -- that's because problems at the point are very rare and it's at the final Schengen destination where most all the customs controls are applied (when not applied at the arrival gate itself). But indeed the lack of knowledge about the potentially applied laws/regulations can cause issues. But even for those who work in this area, it's usually targeted to see a transit stop for this, and it's rather infrequent.