Over here the grocery stores keep their trash behind lock and key; I wouldn't be surprised if it gets disposed of in a secure fashion.

Of course, on the other hand, they donate a lot of things to food banks as well. And before that it gets a discount sticker.

This practice got pretty bad in the UK though, with people lining up and waiting for someone to apply the stickers before buying products - harassing the staff and other customers in the process.