Should my mom snitch on the delivery guys who eat the product?

can I ask you all something - a simply question with answer yes or no !
okay so my mum is a manager of natural food in london called Pret a Manger ((there are hundreds shops like this in london mostly center !!! ye and in the night delivery people come and bring products in the shop... they do this everyday...

ohh well because is my mum 's bithday she done a cake for her friends that work in that shop ... last night she went to the shop to shop to put the cake in the fridge and there she found 4 delivery guys that were eating froom their products blablbalbla my mum told me that they get waste 150 pound every month or week and she doesnt know how ???

ohh well what would you do would u 'snitch' them and they will get fired or just leave it like that because there is no way my mum can talk with them as she doesnt know them...

please can you say your opinion !!!

snitch its not fair

They need to be prosecuted. They are stealing.

well you could tell them 2 stop. but if your shy you could leeve them a note. if they no that some you knows they will probably stop so they dont get fired. (just make the note polite so they dont get mad)

no. snitches get stitches