On Friday, 2 March 2018 12:21:45 UTC, whisky-dave wrote:
SO very difficult to detect, so you have to rely on what;s sold at
the till point rather than what 'evaporates' yes evapouration was
the term used by M&S when my dad worked for them 20 years ago,
NOTHING got stolen but stock evaporated was the term used.

'shrinkage' is the usual term. Not just theft, but damaged stock disposed of without being recorded as waste, etc.

Owain